Olompali State Historic Park Weather

ParkSan Francisco Bay Area

Historic Miwok and ranch site

83°
😎
Comfort Score
98(A)
Perfect
Weather updated September 9, 2026 at 8:32 PM PDT

Olompali State Historic Park weather at a glance

Olompali State Historic Park is a park at 400 feet in San Francisco Bay Area. Historic Miwok and ranch site. Notable features include sunny, warm, historic, and hiking.

Current conditions are 83°F, feeling like 77°F, with 23% humidity, winds near 10 mph, 20% cloud cover, and a 0% chance of precipitation. Hot and breezy 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 27.1 inches.

Plan your week

10-Day Forecast

  1. Today
    Sep 9
    99°61°
    Comfort
    58
    1%
    Precip 0 in
  2. Thu
    Sep 10
    92°63°
    Comfort
    67
    1%
    Precip 0 in
  3. Fri
    Sep 11
    79°53°
    Comfort
    93
    0%
    Precip 0 in
  4. Best day
    Sat
    Sep 12
    76°52°
    Comfort
    94
    0%
    Precip 0 in
  5. Sun
    Sep 13
    85°48°
    Comfort
    82
    0%
    Precip 0 in
  6. Mon
    Sep 14
    90°54°
    Comfort
    67
    0%
    Precip 0 in
  7. Tue
    Sep 15
    85°53°
    Comfort
    84
    0%
    Precip 0 in
  8. Wed
    Sep 16
    86°52°
    Comfort
    80
    0%
    Precip 0 in
  9. Thu
    Sep 17
    93°53°
    Comfort
    61
    1%
    Precip 0 in
  10. Fri
    Sep 18
    91°57°
    Comfort
    65
    2%
    Precip 0 in

Pick your time

Hourly Forecast

  1. Today
    Now
    85°
    Comfort
    96
    1%
    0 in
  2. Today
    9 PM
    83°
    Comfort
    99
    1%
    0 in
  3. Today
    10 PM
    82°
    Comfort
    100
    1%
    0 in
  4. Today
    11 PM
    82°
    Comfort
    99
    1%
    0 in
  5. Thu
    12 AM
    82°
    Comfort
    95
    1%
    0 in
  6. Thu
    1 AM
    79°
    Comfort
    99
    1%
    0 in
  7. Thu
    2 AM
    79°
    Comfort
    99
    1%
    0 in
  8. Thu
    3 AM
    76°
    Comfort
    99
    1%
    0 in
  9. Thu
    4 AM
    75°
    Comfort
    99
    1%
    0 in
  10. Thu
    5 AM
    74°
    Comfort
    99
    1%
    0 in
  11. Thu
    6 AM
    72°
    Comfort
    99
    1%
    0 in
  12. Sunrise6:47 AM
  13. Thu
    7 AM
    71°
    Comfort
    98
    1%
    0 in
  14. Thu
    8 AM
    74°
    Comfort
    99
    1%
    0 in
  15. Thu
    9 AM
    81°
    Comfort
    96
    1%
    0 in
  16. Thu
    10 AM
    87°
    Comfort
    91
    1%
    0 in
  17. Thu
    11 AM
    90°
    Comfort
    85
    1%
    0 in
  18. Thu
    12 PM
    92°
    Comfort
    78
    1%
    0 in
  19. Thu
    1 PM
    91°
    Comfort
    83
    1%
    0 in
  20. Thu
    2 PM
    92°
    Comfort
    82
    1%
    0 in
  21. Thu
    3 PM
    90°
    Comfort
    85
    1%
    0 in
  22. Thu
    4 PM
    87°
    Comfort
    93
    1%
    0 in
  23. Thu
    5 PM
    82°
    Comfort
    94
    1%
    0 in
  24. Thu
    6 PM
    77°
    Comfort
    94
    0%
    0 in
  25. Thu
    7 PM
    72°
    Comfort
    93
    0%
    0 in
  26. Sunset7:25 PM
  27. Thu
    8 PM
    69°
    Comfort
    93
    0%
    0 in
  28. Thu
    9 PM
    67°
    Comfort
    94
    0%
    0 in
  29. Thu
    10 PM
    65°
    Comfort
    93
    0%
    0 in
  30. Thu
    11 PM
    63°
    Comfort
    92
    0%
    0 in
  31. Fri
    12 AM
    62°
    Comfort
    91
    0%
    0 in
  32. Fri
    1 AM
    60°
    Comfort
    90
    0%
    0 in
  33. Fri
    2 AM
    59°
    Comfort
    88
    0%
    0 in
  34. Fri
    3 AM
    57°
    Comfort
    87
    0%
    0 in
  35. Fri
    4 AM
    56°
    Comfort
    85
    0%
    0 in
  36. Fri
    5 AM
    55°
    Comfort
    85
    0%
    0 in
  37. Fri
    6 AM
    54°
    Comfort
    84
    0%
    0 in
  38. Sunrise6:48 AM
  39. Fri
    7 AM
    53°
    Comfort
    83
    0%
    0 in
  40. Fri
    8 AM
    58°
    Comfort
    90
    0%
    0 in
  41. Fri
    9 AM
    65°
    Comfort
    94
    0%
    0 in
  42. Fri
    10 AM
    70°
    Comfort
    98
    0%
    0 in
  43. Fri
    11 AM
    74°
    Comfort
    99
    0%
    0 in
  44. Fri
    12 PM
    76°
    Comfort
    99
    0%
    0 in
  45. Fri
    1 PM
    78°
    Comfort
    98
    0%
    0 in
  46. Fri
    2 PM
    78°
    Comfort
    97
    0%
    0 in
  47. Fri
    3 PM
    79°
    Comfort
    98
    0%
    0 in
  48. Fri
    4 PM
    77°
    Comfort
    98
    0%
    0 in
  49. Fri
    5 PM
    74°
    Comfort
    98
    0%
    0 in
  50. Fri
    6 PM
    72°
    Comfort
    98
    0%
    0 in
  51. Fri
    7 PM
    68°
    Comfort
    96
    0%
    0 in

Current Conditions

Temperature
83°F
Feels like 77°F
Humidity
23%
Dew point 41°F
Wind
10 mph
NW • Gusts 14 mph
Cloud Cover
20%
High clouds
Precip Chance
0%

Comfort Breakdown

Less comfortableMore comfortable
Thermal98
Wind97
Stars Visible95
Moisture99
Precipitation100

Weather Maps

About the weather maps for Olompali State Historic Park

Each preview is centered on Olompali State Historic Park, 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 Olompali State Historic Park. 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
99°Fforecast
21° above normal
Normal: 78°F
Rainfall Year-to-Date
12.0"
34% below average
30-yr avg: 18.2"
Sunny Days
24last 28 days
2 fewer than baseline
Recent baseline: 26
Foggy Days
5last 28 days
vs 10 recent baseline
Clearer than usual
Avg Wind Speed
5.8 mphlast 28 days
2.2 mph calmer than baseline
Recent baseline: 8.0 mph
Comfort Score
8828-day avg
On par with typical
Recent baseline: 88
What the Olompali State Historic Park climate comparisons mean

These cards compare recent conditions at Olompali State Historic Park 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 Olompali State Historic Park 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

83
Avg Comfort
68.5°
Avg High
46.3°
Avg Low
73%
Perfect Days
☀️ Avg Sunshine (recent)9.2h/day
🌫️ Avg Fog (recent)1.7h/day
💧 Avg Annual Rain27.1"
🌧️ Rainy Days/yr89 (24%)
🌫️ Foggy Days/yr (recent)95
✨ Perfect Days (80+)471

🌟 Best Months to Visit

1. June86
75.6° / 50.5° · ☀️ 13.2h
1 foggy days · 5 rainy days
2. August82
78° / 52.4° · ☀️ 12.1h
2 foggy days · 5 rainy days
3. May79
70.1° / 47.6° · ☀️ 12.4h
3 foggy days · 6 rainy days

⚠️ Challenging Months

1. December29
56.9° / 40° · ☀️ 5.3h
💧 6.2" · 12 rainy days · 18 foggy days
2. January33
57° / 40° · ☀️ 7.1h
💧 6.2" · 11 rainy days · 12 foggy days
3. February37
60.7° / 41.9° · ☀️ 6.1h
💧 5.6" · 11 rainy days · 10 foggy days

Monthly Breakdown

MonthComfortHigh/Low☀️ Sun🌫️ Fog💧 RainPerfect
August 20249182.2° / 57.1°12h1d0.07"26
September 20249282.4° / 55.9°11.1h3d0.08"29
October 20249179.3° / 55.8°9.6h3d0.35"29
November 20247961.8° / 47°6.9h9d5.67"21
December 20246856.7° / 45.1°5.6h14d6.31"12
January 20258057° / 41.5°7.5h9d0.71"20
February 20257258.7° / 43.6°6.1h9d6.31"16
March 20257859.9° / 45.4°8.8h7d3.07"16
April 20258866.2° / 47.5°11h10d0.27"26
May 20259272.4° / 51.2°12.9h1d0.11"31
June 20259375.9° / 53.2°13.2h1d0"30
July 20259276.1° / 55.5°12.5h7d0"31
August 20259283.2° / 57.1°12.2h3d0.08"31
September 20259080.7° / 59.2°10.3h4d0.5"28
October 20258871.3° / 53.5°8.3h11d1.08"24
November 20257562.8° / 50.2°6.2h18d3.23"13
December 20256354.2° / 44.9°4.9h21d5.62"6
January 20267256.6° / 44.1°6.6h15d3.52"12
February 20267260.6° / 45.9°6.2h10d4.32"11
March 20269472.6° / 50°10.7h4d0.49"29
April 20268566.5° / 49.3°10.4h4d3.41"22
May 20268968.6° / 52°11h3d0.3"8
Last updated: 5/10/2026

Climate Trends

Average Temperature by Month

89°F76°F63°F49°F36°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 Olompali State Historic Park climate charts

The temperature chart compares average monthly highs and lows at Olompali State Historic Park, 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 Olompali State Historic Park. 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 Olompali State Historic Park

This heatmap shows how average temperature at Olompali State Historic Park 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 Olompali State Historic Park

This heatmap shows when fog or low cloud is most likely at Olompali State Historic Park. 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 Olompali State Historic Park

This heatmap shows the typical hourly wind pattern at Olompali State Historic Park 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 Olompali State Historic Park

This heatmap shows average cloud cover at Olompali State Historic Park 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 Olompali State Historic Park

This heatmap shows the average solar radiation reaching Olompali State Historic Park 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
38.1311, -122.5644
⛰️
Elevation
400 ft
🏷️
Type
Park
🏷️
Tags
#sunny#warm#historic#hiking
Map
Loading map...
Get Directions →

Frequently Asked Questions

Everything you need to know about weather and visiting Olompali State Historic Park

What is the weather at Olompali State Historic Park right now?

Current conditions at Olompali State Historic Park are 83°F, feeling like 77°F, with 23% humidity, winds near 10 mph, 20% cloud cover, and a 0% chance of precipitation. Hot and breezy with some clouds

What temperatures are typical at Olompali State Historic Park?

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 Olompali State Historic Park. These are averages across the year; the monthly climate table on this page shows the warmer and cooler seasons separately.

How much rain does Olompali State Historic Park get?

The location-specific climate baseline estimates about 27.1 inches of precipitation and 89 days with measurable rain in a typical year at Olompali State Historic Park. The monthly breakdown shows when that rain is most likely.

How often is Olompali State Historic Park foggy?

Olompali State Historic Park 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 Olompali State Historic Park for comfortable weather?

Based on the destination's recorded comfort, temperature, sunshine, rain, and fog data, the strongest months are March 2026 (73°F/50°F average high/low and a 94 comfort score), June 2025 (76°F/53°F average high/low and a 93 comfort score), and September 2024 (82°F/56°F average high/low and a 92 comfort score). “Best” depends on the activity, so use the monthly table for the exact tradeoffs.

What kind of destination is Olompali State Historic Park?

Olompali State Historic Park is a park at 400 feet. Historic Miwok and ranch site. Notable features include sunny, warm, historic, and hiking.

💡 Local Tip: San Francisco Bay Area weather can change dramatically within short distances and throughout the day. Always check current conditions before visiting Olompali State Historic Park.