Lake Berryessa Weather
Town • San Francisco Bay Area
Reservoir recreation area, very hot summers
83°
🙂
Comfort Score
79(B)
Great
Weather updated June 30, 2026 at 6:16 PM PDT
Current Conditions
Temperature
83°F
Feels like 83°F
Humidity
33%
Wind
10 mph
NW • Gusts 11 mph
Cloud Cover
0%
Precip Chance
0%
Comfort Breakdown
Temperature48
Wind75
Sunshine100
Humidity100
Precipitation100
Hourly Forecast
Today
| Time | Temp | Comfort | Wind | Precip | Conditions |
|---|---|---|---|---|---|
| Now | 84° | 78 (B) | 10 mph | 0% | ☀️ Sunny |
| 7pm | 81° | 83 (B) | 8 mph | 0% | ☀️ Sunny |
| 8pm | 79° | 90 (A-) | 5 mph | 0% | ☀️ Sunny |
| 9pm | 75° | 100 (A) | 4 mph | 0% | ☀️ Sunny |
| 10pm | 72° | 100 (A) | 3 mph | 0% | ☀️ Sunny |
| 11pm | 69° | 100 (A) | 1 mph | 0% | ☀️ Sunny |
Tomorrow
| Time | Temp | Comfort | Wind | Precip | Conditions |
|---|---|---|---|---|---|
| 12am | 67° | 99 (A) | 2 mph | 0% | ☀️ Sunny |
| 1am | 66° | 97 (A) | 2 mph | 0% | ☀️ Sunny |
| 2am | 64° | 94 (A-) | 2 mph | 0% | ☀️ Sunny |
| 3am | 62° | 91 (A-) | 3 mph | 0% | ☀️ Sunny |
| 4am | 61° | 89 (A-) | 1 mph | 0% | ☀️ Sunny |
| 5am | 60° | 87 (A-) | 3 mph | 0% | ☀️ Sunny |
Weather Maps
Satellite
GOES-West Infrared
Radar
Precipitation
3D Fog Map
View marine layer conditions in 3D
10 mph
Gusts 11 mph
Wind
Coming soon
7-Day Forecast
| Day | High/Low | Comfort | Precip | Conditions |
|---|---|---|---|---|
| Today🏆 Best | 89° / 65° | 76 (B) | 0% | ☀️ Sunny |
| Wed | 90° / 60° | 73 (B-) | 0% | ☀️ Sunny |
| Thu | 92° / 58° | 71 (B-) | 0% | ☀️ Sunny |
| Fri | 93° / 52° | 67 (C) | 0% | ☀️ Sunny |
| Sat | 97° / 54° | 68 (C) | 0% | ☀️ Sunny |
| Sun | 96° / 55° | 71 (B-) | 0% | ☀️ Sunny |
| Mon | 91° / 50° | 65 (C) | 1% | ☀️ Sunny |
Best day this week: Today (Comfort score: 76)
Nearby Temperature Comparison
Conditions at nearby San Francisco Bay Area destinations
American Canyon30 mi
65°18°F cooler80 (B)
Robert Louis Stevenson State Park22 mi
69°14°F cooler95 (A)
Napa22 mi
69°14°F cooler94 (A-)
Santa Rosa29 mi
70°13°F cooler94 (A-)
Wooden Valley14 mi
70°13°F cooler95 (A)
Sugarloaf Ridge State Park19 mi
71°12°F cooler95 (A)
Tip: Bay Area temps can vary 20-30°F within a short distance due to microclimates.
Climate Dashboard
Current conditions vs. rolling 28-day window
Today's High vs Normal
89°Fforecast
6° below normal
Normal: 95°F
Rainfall Year-to-Date
13.6"
168% above average
30-yr avg: 5.1"
Sunny Days
23last 28 days
2 fewer than baseline
Recent baseline: 25
Foggy Days
6last 28 days
vs 2 recent baseline
Foggier than usual
Avg Wind Speed
5.5 mphlast 28 days
2.4 mph calmer than baseline
Recent baseline: 7.9 mph
Comfort Score
8628-day avg
3 pts below typical
Recent baseline: 89
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 627 days (2024-08-22 to 2026-05-10)
82
Avg Comfort
73.7°
Avg High
53°
Avg Low
70%
Perfect Days
☀️ Avg Sunshine (recent)9.5h/day
🌫️ Avg Fog (recent)1.3h/day
💧 Total Rain47.51"
🌧️ Rainy Days127 (20%)
🌫️ Foggy Days105
✨ Perfect Days (80+)441
🌟 Best Months
1. April 202591
72.4° / 50.8° · ☀️ 10.9h
2 foggy days · 3 rainy days
2. March 202691
78.5° / 55° · ☀️ 10.8h
3 foggy days · 1 rainy days
3. May 202589
83.5° / 56.7° · ☀️ 13.1h
0 foggy days · 3 rainy days
⚠️ Challenging Months
1. December 202570
58.1° / 47° · ☀️ 6.2h
💧 5.15" · 10 rainy days · 17 foggy days
2. December 202472
58.8° / 46.4° · ☀️ 6h
💧 5.48" · 12 rainy days · 10 foggy days
3. February 202574
59.3° / 44.2° · ☀️ 6.4h
💧 6.43" · 10 rainy days · 10 foggy days
Monthly Breakdown
| Month | Comfort | High/Low | ☀️ Sun | 🌫️ Fog | 💧 Rain | Perfect |
|---|---|---|---|---|---|---|
| August 2024 | 81 | 90.8° / 61.5° | 11.5h | 0d | 0.04" | 6 |
| September 2024 | 83 | 92.5° / 61° | 11.2h | 1d | 0.02" | 21 |
| October 2024 | 84 | 84.1° / 58.5° | 9.8h | 1d | 0.63" | 22 |
| November 2024 | 78 | 62.3° / 47.3° | 7.2h | 4d | 6.08" | 20 |
| December 2024 | 72 | 58.8° / 46.4° | 6h | 10d | 5.48" | 16 |
| January 2025 | 83 | 58.9° / 43.9° | 8h | 6d | 0.59" | 26 |
| February 2025 | 74 | 59.3° / 44.2° | 6.4h | 10d | 6.43" | 16 |
| March 2025 | 79 | 61.1° / 45.2° | 8.5h | 6d | 2.75" | 18 |
| April 2025 | 91 | 72.4° / 50.8° | 10.9h | 2d | 0.27" | 26 |
| May 2025 | 89 | 83.5° / 56.7° | 13.1h | 0d | 0.24" | 28 |
| June 2025 | 86 | 91.3° / 59.9° | 13.8h | 0d | 0" | 28 |
| July 2025 | 85 | 91.6° / 60.6° | 13.5h | 0d | 0.05" | 25 |
| August 2025 | 79 | 96.6° / 65.1° | 12.5h | 0d | 0" | 18 |
| September 2025 | 86 | 87.5° / 63.7° | 10.5h | 2d | 0.26" | 26 |
| October 2025 | 87 | 73° / 55.7° | 8.5h | 6d | 2.55" | 25 |
| November 2025 | 79 | 64.6° / 51.5° | 7.2h | 13d | 3.39" | 14 |
| December 2025 | 70 | 58.1° / 47° | 6.2h | 17d | 5.15" | 10 |
| January 2026 | 80 | 60° / 45.7° | 7.2h | 7d | 2.93" | 20 |
| February 2026 | 76 | 62.3° / 46.7° | 6.7h | 7d | 4.9" | 16 |
| March 2026 | 91 | 78.5° / 55° | 10.8h | 3d | 0.47" | 29 |
| April 2026 | 83 | 68.8° / 51.1° | 10.6h | 7d | 4.55" | 23 |
| May 2026 | 86 | 77° / 54.1° | 11.1h | 3d | 0.73" | 8 |
Last updated: 5/10/2026
Climate Trends
Average Temperature by Month
Average High
Average Low
Location Details
📍
Coordinates
38.6061, -122.2253
⛰️
Elevation
440 ft
🏷️
Type
Town
🏷️
Tags
#sunny#hot#swimming#boating
Map
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