Rio Vista Weather
Town • San Francisco Bay Area
Delta town known for wind and bridges
81°
🙂
Comfort Score
81(B)
Great
Updated at 4:46 PM PDT
Current Conditions
Temperature
81°F
Feels like 80°F
Humidity
21%
Wind
13 mph
NW • Gusts 17 mph
Cloud Cover
0%
Precip Chance
0%
Comfort Breakdown
Temperature68
Wind55
Sunshine100
Humidity85
Precipitation100
Hourly Forecast
Today
| Time | Temp | Comfort | Wind | Precip | Conditions |
|---|---|---|---|---|---|
| Now | 81° | 77 (B) | 15 mph | 0% | ☀️ Sunny |
| 5pm | 80° | 82 (B) | 13 mph | 0% | ☀️ Sunny |
| 6pm | 76° | 88 (A-) | 15 mph | 0% | ☀️ Sunny |
| 7pm | 74° | 88 (A-) | 14 mph | 0% | ☀️ Sunny |
| 8pm | 71° | 87 (A-) | 13 mph | 0% | ☀️ Sunny |
| 9pm | 68° | 89 (A-) | 12 mph | 0% | ☀️ Sunny |
| 10pm | 66° | 85 (A-) | 9 mph | 0% | ⛅ Partly Cloudy |
| 11pm | 63° | 84 (B) | 11 mph | 0% | ☀️ Sunny |
Tomorrow
| Time | Temp | Comfort | Wind | Precip | Conditions |
|---|---|---|---|---|---|
| 12am | 61° | 81 (B) | 11 mph | 0% | ☀️ Sunny |
| 1am | 60° | 80 (B) | 11 mph | 0% | ☀️ Sunny |
| 2am | 58° | 75 (B) | 12 mph | 0% | ☀️ Sunny |
| 3am | 57° | 74 (B-) | 12 mph | 0% | ☀️ Sunny |
Weather Maps
Satellite
GOES-West Visible
Radar
Precipitation
3D Fog Map
View marine layer conditions in 3D
13 mph
Gusts 17 mph
Wind
Coming soon
7-Day Forecast
| Day | High/Low | Comfort | Precip | Conditions |
|---|---|---|---|---|
| Today🏆 Best | 82° / 59° | 75 (B) | 0% | ☀️ Sunny |
| Sun | 76° / 54° | 74 (B-) | 0% | ☀️ Sunny |
| Mon | 86° / 58° | 61 (C) | 0% | ☀️ Sunny |
| Tue | 91° / 53° | 66 (C) | 0% | ☀️ Sunny |
| Wed | 94° / 56° | 66 (C) | 0% | ☀️ Sunny |
| Thu | 94° / 57° | 66 (C) | 0% | ☀️ Sunny |
| Fri | 88° / 56° | 66 (C) | 0% | ☀️ Sunny |
Best day this week: Today (Comfort score: 75)
Nearby Temperature Comparison
Conditions at nearby Bay Area destinations
Mt. Diablo Summit24 mi
59°22°F cooler77 (B)
Mount Diablo State Park24 mi
59°22°F cooler77 (B)
Morgan Territory Regional Preserve25 mi
68°13°F cooler90 (A-)
Briones Regional Park30 mi
69°12°F cooler88 (A-)
Wooden Valley28 mi
71°10°F cooler95 (A)
Danville30 mi
72°9°F cooler95 (A)
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
82°Fforecast
2° above normal
Normal: 80°F
Rainfall Year-to-Date
8.7"
17% below average
30-yr avg: 10.5"
Sunny Days
22last 28 days
3 fewer than baseline
Recent baseline: 25
Foggy Days
2last 28 days
vs 1 recent baseline
Foggier than usual
Avg Wind Speed
8.6 mphlast 28 days
Typical conditions
Recent baseline: 8.0 mph
Comfort Score
9028-day avg
5 pts below typical
Recent baseline: 95
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 Trends
Average Temperature by Month
Average High
Average Low
Climate Overview
Based on NOAA 30-year temperature/rain normals (1991-2020) with recent fog/sun baseline
84
Avg Comfort
74.7°
Avg High
49.6°
Avg Low
72%
Perfect Days
☀️ Avg Sunshine (recent)8.3h/day
🌫️ Avg Fog (recent)1.3h/day
💧 Avg Annual Rain15.1"
🌧️ Rainy Days/yr75 (21%)
🌫️ Foggy Days/yr (recent)64
✨ Perfect Days (80+)393
🌟 Best Months to Visit
1. May87
79.9° / 52.8° · ☀️ 12.5h
0 foggy days · 5 rainy days
2. June77
87° / 57.2° · ☀️ 12.9h
0 foggy days · 5 rainy days
3. April75
72.3° / 48° · ☀️ 9.7h
2 foggy days · 6 rainy days
⚠️ Challenging Months
1. December26
56.4° / 39.1° · ☀️ 3.4h
💧 3.1" · 9 rainy days · 20 foggy days
2. January33
56.2° / 39.4° · ☀️ 6.5h
💧 3.1" · 9 rainy days · 10 foggy days
3. November52
65.5° / 44.1° · ☀️ 5.8h
💧 3" · 7 rainy days · 8 foggy days
Monthly Breakdown
| Month | Comfort | High/Low | ☀️ Sun | 🌫️ Fog | 💧 Rain | Perfect |
|---|---|---|---|---|---|---|
| October 2024 | 97 | 66.1° / 47.7° | 9h | 0d | 0.07" | 2 |
| November 2024 | 81 | 62.4° / 43.2° | 6.3h | 6d | 2.63" | 18 |
| December 2024 | 69 | 57.5° / 42.6° | 4.2h | 15d | 3.25" | 10 |
| January 2025 | 83 | 59.2° / 37.5° | 7.2h | 2d | 0.12" | 26 |
| February 2025 | 80 | 61.3° / 43.7° | 7h | 2d | 4.13" | 19 |
| March 2025 | 88 | 63.9° / 45.3° | 8.4h | 1d | 0.98" | 26 |
| April 2025 | 94 | 71.5° / 49.6° | 10.1h | 1d | 0.31" | 28 |
| May 2025 | 93 | 80.7° / 54.8° | 12.5h | 0d | 0.1" | 29 |
| June 2025 | 93 | 83.8° / 56.7° | 12.9h | 0d | 0" | 30 |
| July 2025 | 93 | 84.2° / 58.2° | 12.5h | 0d | 0" | 31 |
| August 2025 | 88 | 90.7° / 61.5° | 11.5h | 0d | 0" | 25 |
| September 2025 | 91 | 85.1° / 62.1° | 9.9h | 0d | 0.13" | 27 |
| October 2025 | 90 | 74.1° / 53.6° | 7.9h | 3d | 1.67" | 27 |
| November 2025 | 75 | 62.8° / 48.8° | 5.2h | 10d | 2.32" | 14 |
| December 2025 | 56 | 51.8° / 43.8° | 2.6h | 25d | 2.43" | 2 |
| January 2026 | 69 | 56.8° / 40.6° | 5.8h | 18d | 2.63" | 7 |
| February 2026 | 80 | 63.6° / 44.4° | 6.8h | 9d | 3.11" | 17 |
| March 2026 | 95 | 77.4° / 52.3° | 9.9h | 1d | 0" | 31 |
| April 2026 | 89 | 70° / 49.8° | 9.2h | 3d | 2.94" | 24 |
Last updated: 5/11/2026
Location Details
📍
Coordinates
38.1758, -121.6961
⛰️
Elevation
20 ft
🏷️
Type
Town
🏷️
Tags
#sunny#windy#waterfront#delta
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