Armstrong Redwoods State Natural Reserve Weather

ParkSan Francisco Bay Area

Ancient redwood grove

84°
😎
Comfort Score
95(A)
Perfect
Weather updated September 9, 2026 at 9:17 PM PDT

Armstrong Redwoods State Natural Reserve weather at a glance

Armstrong Redwoods State Natural Reserve is a park at 200 feet in San Francisco Bay Area. Ancient redwood grove. Notable features include cool, redwoods, hiking, and camping.

Current conditions are 84°F, feeling like 80°F, with 21% humidity, winds near 5 mph, 41% cloud cover, and a 0% chance of precipitation. Hot with some clouds.

The location-specific climate baseline shows an average daily high of 68°F and an average low of 46°F, with about 0.0 hours of sunshine per day and 0.0 hours of morning fog per day. Expected annual precipitation is approximately 51.2 inches.

Plan your week

10-Day Forecast

  1. Today
    Sep 9
    100°68°
    Comfort
    60
    2%
    Precip 0 in
  2. Thu
    Sep 10
    101°67°
    Comfort
    59
    2%
    Precip 0 in
  3. Fri
    Sep 11
    93°55°
    Comfort
    63
    0%
    Precip 0 in
  4. Sat
    Sep 12
    81°52°
    Comfort
    89
    0%
    Precip 0 in
  5. Sun
    Sep 13
    83°48°
    Comfort
    85
    1%
    Precip 0 in
  6. Mon
    Sep 14
    85°55°
    Comfort
    85
    0%
    Precip 0 in
  7. Best day
    Tue
    Sep 15
    81°54°
    Comfort
    90
    0%
    Precip 0 in
  8. Wed
    Sep 16
    81°51°
    Comfort
    89
    0%
    Precip 0 in
  9. Thu
    Sep 17
    86°54°
    Comfort
    80
    1%
    Precip 0 in
  10. Fri
    Sep 18
    91°59°
    Comfort
    67
    1%
    Precip 0 in

Pick your time

Hourly Forecast

  1. Today
    Now
    85°
    Comfort
    95
    1%
    0 in
  2. Today
    10 PM
    83°
    Comfort
    98
    1%
    0 in
  3. Today
    11 PM
    82°
    Comfort
    97
    1%
    0 in
  4. Thu
    12 AM
    82°
    Comfort
    98
    1%
    0 in
  5. Thu
    1 AM
    82°
    Comfort
    99
    1%
    0 in
  6. Thu
    2 AM
    80°
    Comfort
    99
    1%
    0 in
  7. Thu
    3 AM
    80°
    Comfort
    97
    2%
    0 in
  8. Thu
    4 AM
    80°
    Comfort
    97
    1%
    0 in
  9. Thu
    5 AM
    78°
    Comfort
    99
    1%
    0 in
  10. Thu
    6 AM
    76°
    Comfort
    100
    1%
    0 in
  11. Sunrise6:49 AM
  12. Thu
    7 AM
    75°
    Comfort
    99
    1%
    0 in
  13. Thu
    8 AM
    77°
    Comfort
    100
    1%
    0 in
  14. Thu
    9 AM
    84°
    Comfort
    90
    1%
    0 in
  15. Thu
    10 AM
    89°
    Comfort
    78
    0%
    0 in
  16. Thu
    11 AM
    92°
    Comfort
    70
    1%
    0 in
  17. Thu
    12 PM
    93°
    Comfort
    64
    1%
    0 in
  18. Thu
    1 PM
    101°
    Comfort
    57
    1%
    0 in
  19. Thu
    2 PM
    101°
    Comfort
    60
    1%
    0 in
  20. Thu
    3 PM
    100°
    Comfort
    65
    1%
    0 in
  21. Thu
    4 PM
    98°
    Comfort
    70
    1%
    0 in
  22. Thu
    5 PM
    96°
    Comfort
    79
    0%
    0 in
  23. Thu
    6 PM
    93°
    Comfort
    84
    0%
    0 in
  24. Thu
    7 PM
    87°
    Comfort
    92
    0%
    0 in
  25. Sunset7:27 PM
  26. Thu
    8 PM
    79°
    Comfort
    100
    0%
    0 in
  27. Thu
    9 PM
    74°
    Comfort
    100
    0%
    0 in
  28. Thu
    10 PM
    70°
    Comfort
    99
    0%
    0 in
  29. Thu
    11 PM
    67°
    Comfort
    98
    0%
    0 in
  30. Fri
    12 AM
    66°
    Comfort
    97
    0%
    0 in
  31. Fri
    1 AM
    64°
    Comfort
    95
    0%
    0 in
  32. Fri
    2 AM
    62°
    Comfort
    93
    0%
    0 in
  33. Fri
    3 AM
    59°
    Comfort
    91
    0%
    0 in
  34. Fri
    4 AM
    58°
    Comfort
    90
    0%
    0 in
  35. Fri
    5 AM
    57°
    Comfort
    88
    0%
    0 in
  36. Fri
    6 AM
    56°
    Comfort
    86
    0%
    0 in
  37. Sunrise6:50 AM
  38. Fri
    7 AM
    55°
    Comfort
    86
    0%
    0 in
  39. Fri
    8 AM
    60°
    Comfort
    91
    0%
    0 in
  40. Fri
    9 AM
    66°
    Comfort
    97
    0%
    0 in
  41. Fri
    10 AM
    72°
    Comfort
    100
    0%
    0 in
  42. Fri
    11 AM
    78°
    Comfort
    99
    0%
    0 in
  43. Fri
    12 PM
    81°
    Comfort
    91
    0%
    0 in
  44. Fri
    1 PM
    85°
    Comfort
    83
    0%
    0 in
  45. Fri
    2 PM
    93°
    Comfort
    67
    0%
    0 in
  46. Fri
    3 PM
    91°
    Comfort
    80
    0%
    0 in
  47. Fri
    4 PM
    89°
    Comfort
    89
    0%
    0 in
  48. Fri
    5 PM
    87°
    Comfort
    94
    0%
    0 in
  49. Fri
    6 PM
    84°
    Comfort
    96
    0%
    0 in
  50. Fri
    7 PM
    76°
    Comfort
    100
    0%
    0 in
  51. Sunset7:26 PM
  52. Fri
    8 PM
    68°
    Comfort
    95
    0%
    0 in

Current Conditions

Temperature
84°F
Feels like 80°F
Humidity
21%
Dew point 40°F
Wind
5 mph
NW • Gusts 5 mph
Cloud Cover
41%
High clouds
Precip Chance
0%

Comfort Breakdown

Less comfortableMore comfortable
Thermal92
Wind100
Night Sky95
Moisture98
Precipitation100

Weather Maps

About the weather maps for Armstrong Redwoods State Natural Reserve

Each preview is centered on Armstrong Redwoods State Natural Reserve, with the red pin marking its approximate location. Satellite imagery provides cloud context, radar shows nearby precipitation, and the fog view shows the marine-layer or low-cloud field when that regional layer is available.

These images cover a wider area than the point forecast, so a nearby cloud or rain band may not be directly over Armstrong Redwoods State Natural Reserve. Open a preview for the interactive map and its latest timestamp before making a weather-sensitive decision.

Nearby Temperature Comparison

Conditions at nearby San Francisco Bay Area destinations

Tip: Bay Area temps can vary 20-30°F within a short distance due to microclimates.

Climate Dashboard

Current conditions vs. NOAA normals and recent destination baseline

Today's High vs Normal
100°Fforecast
22° above normal
Normal: 78°F
Rainfall Year-to-Date
17.5"
46% below average
30-yr avg: 32.4"
Sunny Days
24last 28 days
1 more than baseline
Recent baseline: 23
Foggy Days
10last 28 days
vs 5 recent baseline
Foggier than usual
Avg Wind Speed
6.1 mphlast 28 days
Typical conditions
Recent baseline: 6.3 mph
Comfort Score
8628-day avg
On par with typical
Recent baseline: 88
What the Armstrong Redwoods State Natural Reserve climate comparisons mean

These cards compare recent conditions at Armstrong Redwoods State Natural Reserve with the available local baseline. Temperature and year-to-date rainfall use long-term normals when available; fog, sunshine, wind, and comfort use the matching recent or modeled baseline identified on each card.

Positive and negative differences describe how Armstrong Redwoods State Natural Reserve departs from its own usual pattern. They should not be read as a direct comparison with another city or as a forecast beyond the period shown.

Historical Climate Data

Long-term weather patterns and climate data

Data sources: NOAA URMA for recent temperature history, NOAA Stage IV for recent precipitation, NOAA HRRR for fog, cloud, wind, humidity, and sunshine signals, and NOAA 1991-2020 climate normals for long-term baselines.

Climate Overview

Based on NOAA 30-year temperature/rain normals (1991-2020) with recent fog/sun baseline

84
Avg Comfort
68.1°
Avg High
45.8°
Avg Low
77%
Perfect Days
☀️ Avg Sunshine (recent)9.3h/day
🌫️ Avg Fog (recent)1.3h/day
💧 Avg Annual Rain51.2"
🌧️ Rainy Days/yr116 (32%)
🌫️ Foggy Days/yr (recent)63
✨ Perfect Days (80+)497

🌟 Best Months to Visit

1. June88
75.1° / 49.8° · ☀️ 13h
0 foggy days · 5 rainy days
2. August84
78.7° / 52.5° · ☀️ 12.1h
1 foggy days · 5 rainy days
3. July80
77.8° / 52.1° · ☀️ 11.9h
3 foggy days · 5 rainy days

⚠️ Challenging Months

1. December31
57° / 40° · ☀️ 6h
💧 9.3" · 17 rainy days · 10 foggy days
2. February37
59.4° / 41.2° · ☀️ 6.2h
💧 11.2" · 16 rainy days · 9 foggy days
3. November47
63.4° / 43° · ☀️ 7h
💧 6" · 11 rainy days · 8 foggy days

Monthly Breakdown

MonthComfortHigh/Low☀️ Sun🌫️ Fog💧 RainPerfect
August 20248886.4° / 58°12.1h1d0.07"25
September 20249283.7° / 55.9°11h0d0"30
October 20248581.3° / 56.5°9.4h3d0.68"25
November 20247762.2° / 45.5°6.8h6d13.27"18
December 20247361° / 45.5°6.1h9d10.55"17
January 20258661.4° / 42.1°8h3d2.37"28
February 20257359.8° / 43.2°6h9d12.22"17
March 20257760.4° / 44.1°8.9h6d5.23"17
April 20259067.3° / 46.6°10.4h4d0.62"23
May 20259377° / 51.6°13h2d0.11"29
June 20259379.7° / 54.2°13h0d0"30
July 20259278.1° / 55°11.9h3d0.07"31
August 20259186.2° / 58.7°12.1h1d0"29
September 20258880.8° / 57.7°9.9h5d1.55"26
October 20258571.6° / 51.8°8.4h9d2.2"22
November 20258065.9° / 49.5°7.2h10d5.84"18
December 20257360.7° / 46.2°6h11d8.95"18
January 20268262.4° / 44.6°7.1h5d5.27"23
February 20267662.5° / 45.7°6.5h9d6.14"15
March 20269476.7° / 52°10.9h1d0.54"28
April 20268366.3° / 47.1°10.4h10d5.13"20
May 20268671.8° / 50.7°11.3h5d0.39"8
Last updated: 5/10/2026

Climate Trends

Average Temperature by Month

92°F79°F65°F52°F39°FOct '24Nov '24Dec '24Jan '25Feb '25Mar '25Apr '25May '25Jun '25Jul '25Aug '25Sep '25Oct '25Nov '25Dec '25Jan '26Feb '26Mar '26Apr '26May '26Jun '26Jul '26Aug '26
Average High
Average Low
About the Armstrong Redwoods State Natural Reserve climate charts

The temperature chart compares average monthly highs and lows at Armstrong Redwoods State Natural Reserve, showing both the seasonal cycle and the typical day-to-night range. The comfort chart summarizes how often the combined weather pattern is favorable rather than judging temperature alone.

Precipitation shows the total recorded or modeled rainfall for each month at Armstrong Redwoods State Natural Reserve. Sunshine compares average bright-sky hours with the daylight available, while fog shows the average number of morning fog or low-cloud hours per day. Switch between the chart tabs to compare the same months across each measure.

Hourly Temperature, Fog, Wind, Cloud Cover, and Solar Radiation Patterns

Average local hour by month from 2014-09-30 to 2026-04-30

How to read the temperature heatmap for Armstrong Redwoods State Natural Reserve

This heatmap shows how average temperature at Armstrong Redwoods State Natural Reserve changes by hour and month. Read left to right for the seasons and top to bottom for the time of day; warmer colors identify the usual afternoon peaks and cooler colors show overnight and winter lows.

Each cell combines one month with one local hour. Hover over or focus on a cell for its value and sample coverage; the red marker shows the current month and hour.

How to read the fog heatmap for Armstrong Redwoods State Natural Reserve

This heatmap shows when fog or low cloud is most likely at Armstrong Redwoods State Natural Reserve. Darker cells mark month-and-hour combinations with a stronger historical fog signal, which helps separate overnight or morning fog from cloud that tends to linger into the afternoon.

Each cell combines one month with one local hour. Hover over or focus on a cell for its value and sample coverage; the red marker shows the current month and hour.

How to read the wind heatmap for Armstrong Redwoods State Natural Reserve

This heatmap shows the typical hourly wind pattern at Armstrong Redwoods State Natural Reserve through the year. It makes recurring afternoon wind, calmer overnight periods, and seasonal changes easier to compare than a single daily wind value.

Each cell combines one month with one local hour. Hover over or focus on a cell for its value and sample coverage; the red marker shows the current month and hour.

How to read the cloud cover heatmap for Armstrong Redwoods State Natural Reserve

This heatmap shows average cloud cover at Armstrong Redwoods State Natural Reserve for every month and hour. Use it to see whether cloudiness is mainly an overnight and morning pattern or commonly persists during the part of the day you plan to visit.

Each cell combines one month with one local hour. Hover over or focus on a cell for its value and sample coverage; the red marker shows the current month and hour.

How to read the solar radiation heatmap for Armstrong Redwoods State Natural Reserve

This heatmap shows the average solar radiation reaching Armstrong Redwoods State Natural Reserve by month and hour. Brighter cells indicate the strongest typical sun, while muted cells can reflect nighttime, shorter winter days, cloud cover, smoke, or terrain shading.

Each cell combines one month with one local hour. Hover over or focus on a cell for its value and sample coverage; the red marker shows the current month and hour.

Loading interactive climate heatmaps…

Location Details

📍
Coordinates
38.5311, -123.0017
⛰️
Elevation
200 ft
🏷️
Type
Park
🏷️
Tags
#cool#redwoods#hiking#camping
Map
Loading map...
Get Directions →

Frequently Asked Questions

Everything you need to know about weather and visiting Armstrong Redwoods State Natural Reserve

What is the weather at Armstrong Redwoods State Natural Reserve right now?

Current conditions at Armstrong Redwoods State Natural Reserve are 84°F, feeling like 80°F, with 21% humidity, winds near 5 mph, 41% cloud cover, and a 0% chance of precipitation. Hot with some clouds

What temperatures are typical at Armstrong Redwoods State Natural Reserve?

The location-specific record for 1991-01-01 through 2020-12-31 shows an average daily high of 68°F and an average low of 46°F at Armstrong Redwoods State Natural Reserve. These are averages across the year; the monthly climate table on this page shows the warmer and cooler seasons separately.

How much rain does Armstrong Redwoods State Natural Reserve get?

The location-specific climate baseline estimates about 51.2 inches of precipitation and 116 days with measurable rain in a typical year at Armstrong Redwoods State Natural Reserve. The monthly breakdown shows when that rain is most likely.

How often is Armstrong Redwoods State Natural Reserve foggy?

Armstrong Redwoods State Natural Reserve averages about 0.0 hours of morning fog per day across the location-specific climate baseline, with approximately 0 foggy days in a typical year. Fog varies considerably by season, so check the monthly breakdown and current forecast for visit planning.

What are the best months to visit Armstrong Redwoods State Natural Reserve for comfortable weather?

Based on the destination's recorded comfort, temperature, sunshine, rain, and fog data, the strongest months are March 2026 (77°F/52°F average high/low and a 94 comfort score), May 2025 (77°F/52°F average high/low and a 93 comfort score), and June 2025 (80°F/54°F average high/low and a 93 comfort score). “Best” depends on the activity, so use the monthly table for the exact tradeoffs.

What kind of destination is Armstrong Redwoods State Natural Reserve?

Armstrong Redwoods State Natural Reserve is a park at 200 feet. Ancient redwood grove. Notable features include cool, redwoods, hiking, and camping.

💡 Local Tip: San Francisco Bay Area weather can change dramatically within short distances and throughout the day. Always check current conditions before visiting Armstrong Redwoods State Natural Reserve.