Olompali State Historic Park Weather

Park • San Francisco Bay Area

Historic Miwok and ranch site

56°
😊
Comfort Score
87(A-)
Excellent
Weather updated October 1, 2026 at 12:02 AM 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 56°F, feeling like 55°F, with 74% humidity, winds near 2 mph, 1% cloud cover, and a 0% chance of precipitation. Cool with clear skies.

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

Drag or swipe to browse
  1. Best day
    Today
    Oct 1
    83°48°
    Comfort
    85
    0%
    Precip 0 in
  2. Fri
    Oct 2
    84°51°
    Comfort
    78
    0%
    Precip 0 in
  3. Sat
    Oct 3
    96°62°
    Comfort
    60
    0%
    Precip 0 in
  4. Sun
    Oct 4
    98°67°
    Comfort
    61
    2%
    Precip 0 in
  5. Mon
    Oct 5
    100°66°
    Comfort
    58
    0%
    Precip 0 in
  6. Tue
    Oct 6
    101°67°
    Comfort
    58
    0%
    Precip 0 in
  7. Wed
    Oct 7
    102°70°
    Comfort
    58
    1%
    Precip 0 in
  8. Thu
    Oct 8
    95°60°
    Comfort
    60
    1%
    Precip 0 in
  9. Fri
    Oct 9
    89°56°
    Comfort
    71
    0%
    Precip 0 in
  10. Sat
    Oct 10
    90°55°
    Comfort
    67
    0%
    Precip 0 in

Hour by hour

Hourly Forecast

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  1. Today
    Now
    56°
    Comfort
    87
    0%
    0 in
  2. Today
    1 AM
    55°
    Comfort
    86
    0%
    0 in
  3. Today
    2 AM
    55°
    Comfort
    85
    0%
    0 in
  4. Today
    3 AM
    54°
    Comfort
    82
    0%
    0 in
  5. Today
    4 AM
    51°
    Comfort
    80
    0%
    0 in
  6. Today
    5 AM
    49°
    Comfort
    78
    0%
    0 in
  7. Today
    6 AM
    48°
    Comfort
    77
    0%
    0 in
  8. Today
    7 AM
    48°
    Comfort
    76
    0%
    0 in
  9. Sunrise7:06 AM
  10. Today
    8 AM
    51°
    Comfort
    80
    0%
    0 in
  11. Today
    9 AM
    57°
    Comfort
    88
    0%
    0 in
  12. Today
    10 AM
    63°
    Comfort
    93
    0%
    0 in
  13. Today
    11 AM
    69°
    Comfort
    99
    0%
    0 in
  14. Today
    12 PM
    74°
    Comfort
    100
    0%
    0 in
  15. Today
    1 PM
    78°
    Comfort
    97
    0%
    0 in
  16. Today
    2 PM
    81°
    Comfort
    92
    0%
    0 in
  17. Today
    3 PM
    83°
    Comfort
    92
    0%
    0 in
  18. Today
    4 PM
    83°
    Comfort
    94
    0%
    0 in
  19. Today
    5 PM
    82°
    Comfort
    94
    0%
    0 in
  20. Today
    6 PM
    79°
    Comfort
    96
    0%
    0 in
  21. Sunset6:52 PM
  22. Today
    7 PM
    71°
    Comfort
    98
    0%
    0 in
  23. Today
    8 PM
    67°
    Comfort
    94
    0%
    0 in
  24. Today
    9 PM
    64°
    Comfort
    91
    0%
    0 in
  25. Today
    10 PM
    60°
    Comfort
    89
    0%
    0 in
  26. Today
    11 PM
    58°
    Comfort
    88
    0%
    0 in
  27. Fri
    12 AM
    56°
    Comfort
    83
    0%
    0 in
  28. Fri
    1 AM
    54°
    Comfort
    86
    0%
    0 in
  29. Fri
    2 AM
    54°
    Comfort
    85
    0%
    0 in
  30. Fri
    3 AM
    53°
    Comfort
    82
    0%
    0 in
  31. Fri
    4 AM
    53°
    Comfort
    78
    0%
    0 in
  32. Fri
    5 AM
    51°
    Comfort
    74
    0%
    0 in
  33. Fri
    6 AM
    51°
    Comfort
    73
    0%
    0 in
  34. Fri
    7 AM
    51°
    Comfort
    73
    0%
    0 in
  35. Sunrise7:07 AM
  36. Fri
    8 AM
    52°
    Comfort
    77
    0%
    0 in
  37. Fri
    9 AM
    58°
    Comfort
    86
    0%
    0 in
  38. Fri
    10 AM
    65°
    Comfort
    94
    0%
    0 in
  39. Fri
    11 AM
    72°
    Comfort
    98
    0%
    0 in
  40. Fri
    12 PM
    77°
    Comfort
    97
    0%
    0 in
  41. Fri
    1 PM
    80°
    Comfort
    94
    0%
    0 in
  42. Fri
    2 PM
    82°
    Comfort
    93
    0%
    0 in
  43. Fri
    3 PM
    83°
    Comfort
    89
    0%
    0 in
  44. Fri
    4 PM
    84°
    Comfort
    89
    0%
    0 in
  45. Fri
    5 PM
    83°
    Comfort
    89
    0%
    0 in
  46. Fri
    6 PM
    81°
    Comfort
    94
    0%
    0 in
  47. Sunset6:51 PM
  48. Fri
    7 PM
    73°
    Comfort
    99
    0%
    0 in
  49. Fri
    8 PM
    68°
    Comfort
    94
    0%
    0 in
  50. Fri
    9 PM
    66°
    Comfort
    92
    0%
    0 in
  51. Fri
    10 PM
    65°
    Comfort
    93
    0%
    0 in
  52. Fri
    11 PM
    65°
    Comfort
    92
    0%
    0 in

Current Conditions

Temperature
56°F
Feels like 55°F
Humidity
74%
Dew point 48°F
Wind
2 mph
NW • Gusts 3 mph
Cloud Cover
1%
Precip Chance
0%

Comfort Breakdown

Less comfortableMore comfortable
Thermal73
Wind99
Stars Visible100
Moisture100
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.

Climate Dashboard

Current conditions vs. NOAA normals and recent destination baseline

Today's High vs Normal
83°Fforecast
9° above normal
Normal: 74°F
Rainfall Year-to-Date
15.9"
13% below average
30-yr avg: 18.3"
Sunny Days
27last 28 days
1 fewer than baseline
Recent baseline: 28
Foggy Days
4last 28 days
vs 3 recent baseline
Foggier than usual
Avg Wind Speed
5.2 mphlast 28 days
1.2 mph calmer than baseline
Recent baseline: 6.4 mph
Comfort Score
9328-day avg
3 pts above typical
Recent baseline: 90
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

86
Avg Comfort
68.5°
Avg High
46.3°
Avg Low
77%
Perfect Days
☀️ Avg Sunshine (recent)8.8h/day
🌫️ Avg Fog (recent)1.6h/day
💧 Avg Annual Rain27.1"
🌧️ Rainy Days/yr89 (24%)
🌫️ Foggy Days/yr (recent)66
✨ Perfect Days (80+)518

🌟 Best Months to Visit

1. June82
75.6° / 50.5° · ☀️ 12.3h
2 foggy days · 5 rainy days
2. July81
77° / 52° · ☀️ 11.8h
2 foggy days · 5 rainy days
3. May80
70.1° / 47.6° · ☀️ 11.9h
2 foggy days · 6 rainy days

⚠️ Challenging Months

1. December26
56.9° / 40° · ☀️ 3.9h
💧 6.2" · 12 rainy days · 17 foggy days
2. January34
57° / 40° · ☀️ 6.5h
💧 6.2" · 11 rainy days · 9 foggy days
3. February45
60.7° / 41.9° · ☀️ 6.3h
💧 5.6" · 11 rainy days · 6 foggy days

Monthly Breakdown

MonthComfortHigh/Low☀️ Sun🌫️ Fog💧 RainPerfect
October 20249366.1° / 44°8.5h0d0.19"2
November 20247963.6° / 44.9°6.2h8d7.98"17
December 20246858.6° / 44.7°4.5h12d6.87"12
January 20258261.1° / 40.6°6.8h9d0.32"22
February 20257561.5° / 42.9°6.4h6d9.22"16
March 20258262.2° / 44.6°8h4d2.9"18
April 20259367.9° / 46.4°10.1h2d0.35"28
May 20259574.6° / 50.1°12.2h2d0.12"31
June 20259576.7° / 51.1°12.4h3d0"30
July 20259478.2° / 54.2°11.9h3d0"31
August 20259184.8° / 55.2°11.4h4d0"30
September 20259181.7° / 57.4°9.5h3d0.15"26
October 20258773.7° / 52°7.7h7d1.13"28
November 20257764.6° / 49.6°5.9h13d4.32"13
December 20256054.4° / 44.4°3.4h21d5.65"3
January 20267559.8° / 43.6°6.2h9d5.83"19
February 20267763.7° / 46°6.2h6d5.28"17
March 20269577.2° / 49.8°9.7h0d0.04"30
April 20268868.1° / 47.9°9.2h3d3.78"24
May 20269473.1° / 51.7°11.6h1d0.94"30
June 20269579.1° / 54.2°12.3h1d0.01"29
July 20269481.5° / 54.9°11.7h0d0"31
August 20269382.6° / 55°10.6h4d0.04"31
Last updated: 9/2/2026

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
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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 56°F, feeling like 55°F, with 74% humidity, winds near 2 mph, 1% cloud cover, and a 0% chance of precipitation. Cool with clear skies

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 May 2025 (75°F/50°F average high/low and a 95 comfort score), June 2025 (77°F/51°F average high/low and a 95 comfort score), and March 2026 (77°F/50°F average high/low and a 95 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.