Rio Vista Weather
Town • San Francisco Bay Area
Delta town known for wind and bridges
78°
🙂
Comfort Score
83(B)
Great
Weather updated June 30, 2026 at 6:16 PM PDT
Current Conditions
Temperature
78°F
Feels like 76°F
Humidity
37%
Wind
16 mph
NW • Gusts 23 mph
Cloud Cover
0%
Precip Chance
0%
Comfort Breakdown
Temperature94
Wind25
Sunshine100
Humidity100
Precipitation100
Hourly Forecast
Today
| Time | Temp | Comfort | Wind | Precip | Conditions |
|---|---|---|---|---|---|
| Now | 79° | 81 (B) | 16 mph | 0% | ☀️ Sunny |
| 7pm | 76° | 88 (A-) | 15 mph | 0% | ☀️ Sunny |
| 8pm | 72° | 88 (A-) | 12 mph | 0% | ☀️ Sunny |
| 9pm | 67° | 89 (A-) | 10 mph | 0% | ☀️ Sunny |
| 10pm | 65° | 84 (B) | 11 mph | 0% | ☀️ Sunny |
| 11pm | 64° | 81 (B) | 14 mph | 0% | ☀️ Sunny |
Tomorrow
| Time | Temp | Comfort | Wind | Precip | Conditions |
|---|---|---|---|---|---|
| 12am | 63° | 79 (B) | 14 mph | 0% | ☀️ Sunny |
| 1am | 62° | 86 (A-) | 6 mph | 0% | ☀️ Sunny |
| 2am | 59° | 84 (B) | 3 mph | 0% | ☀️ Sunny |
| 3am | 58° | 83 (B) | 4 mph | 0% | ☀️ Sunny |
| 4am | 57° | 81 (B) | 3 mph | 0% | ☀️ Sunny |
| 5am | 57° | 77 (B) | 7 mph | 0% | ☀️ Sunny |
Weather Maps
Satellite
GOES-West Infrared
Radar
Precipitation
3D Fog Map
View marine layer conditions in 3D
16 mph
Gusts 23 mph
Wind
Coming soon
7-Day Forecast
| Day | High/Low | Comfort | Precip | Conditions |
|---|---|---|---|---|
| Today | 86° / 59° | 71 (B-) | 0% | ☀️ Sunny |
| Wed🏆 Best | 87° / 57° | 73 (B-) | 0% | ☀️ Sunny |
| Thu | 90° / 55° | 66 (C) | 0% | ☀️ Sunny |
| Fri | 91° / 53° | 61 (C) | 0% | ☀️ Sunny |
| Sat | 93° / 55° | 66 (C) | 0% | ☀️ Sunny |
| Sun | 92° / 55° | 66 (C) | 0% | ☀️ Sunny |
| Mon | 87° / 54° | 64 (C) | 0% | ☀️ Sunny |
Best day this week: Wed (Comfort score: 73)
Nearby Temperature Comparison
Conditions at nearby San Francisco Bay Area destinations
Mt. Diablo Summit24 mi
63°15°F cooler79 (B)
Mount Diablo State Park24 mi
63°15°F cooler79 (B)
Briones Regional Park30 mi
65°13°F cooler81 (B)
Martinez26 mi
69°9°F cooler82 (B)
Winters28 mi
87°+9°F warmer75 (B)
Benicia27 mi
70°8°F cooler87 (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
86°Fforecast
1° below normal
Normal: 87°F
Rainfall Year-to-Date
13.3"
175% above average
30-yr avg: 4.8"
Sunny Days
22last 28 days
3 fewer than baseline
Recent baseline: 25
Foggy Days
5last 28 days
vs 3 recent baseline
Foggier than usual
Avg Wind Speed
8.3 mphlast 28 days
Typical conditions
Recent baseline: 9.3 mph
Comfort Score
8828-day avg
On par with typical
Recent baseline: 90
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
71.2°
Avg High
50.4°
Avg Low
70%
Perfect Days
☀️ Avg Sunshine (recent)9.2h/day
🌫️ Avg Fog (recent)1.6h/day
💧 Total Rain46.62"
🌧️ Rainy Days121 (19%)
🌫️ Foggy Days124
✨ Perfect Days (80+)438
🌟 Best Months
1. March 202694
74.7° / 52.5° · ☀️ 10.9h
1 foggy days · 2 rainy days
2. April 202591
70.4° / 49.2° · ☀️ 10.9h
4 foggy days · 4 rainy days
3. May 202590
80.6° / 53.6° · ☀️ 13h
0 foggy days · 2 rainy days
⚠️ Challenging Months
1. December 202561
53.5° / 43.4° · ☀️ 3.9h
💧 5.66" · 10 rainy days · 23 foggy days
2. January 202669
56.7° / 42.6° · ☀️ 5.8h
💧 3.6" · 7 rainy days · 20 foggy days
3. December 202469
57.4° / 43.1° · ☀️ 5.4h
💧 5.75" · 12 rainy days · 20 foggy days
Monthly Breakdown
| Month | Comfort | High/Low | ☀️ Sun | 🌫️ Fog | 💧 Rain | Perfect |
|---|---|---|---|---|---|---|
| August 2024 | 87 | 87.1° / 59.1° | 11.5h | 0d | 0.15" | 9 |
| September 2024 | 85 | 88° / 57.4° | 11.1h | 2d | 0.03" | 24 |
| October 2024 | 87 | 83.2° / 57.2° | 9.9h | 0d | 0.24" | 24 |
| November 2024 | 80 | 62.5° / 45° | 7.1h | 3d | 4.46" | 22 |
| December 2024 | 69 | 57.4° / 43.1° | 5.4h | 20d | 5.75" | 11 |
| January 2025 | 81 | 58.2° / 39.5° | 7.7h | 8d | 0.82" | 22 |
| February 2025 | 76 | 59.8° / 43.9° | 6.6h | 3d | 5.82" | 16 |
| March 2025 | 81 | 61.7° / 45.3° | 9h | 2d | 2.57" | 18 |
| April 2025 | 91 | 70.4° / 49.2° | 10.9h | 4d | 0.47" | 26 |
| May 2025 | 90 | 80.6° / 53.6° | 13h | 0d | 0.15" | 31 |
| June 2025 | 88 | 83.9° / 54.7° | 13.7h | 0d | 0" | 30 |
| July 2025 | 87 | 83.6° / 56.3° | 13.2h | 2d | 0.01" | 30 |
| August 2025 | 84 | 90.2° / 59.2° | 12.5h | 0d | 0" | 27 |
| September 2025 | 87 | 86° / 60.7° | 10.7h | 1d | 0.12" | 27 |
| October 2025 | 88 | 72.8° / 54.6° | 8.2h | 4d | 3.07" | 24 |
| November 2025 | 76 | 63.3° / 49.8° | 5.8h | 13d | 4.01" | 17 |
| December 2025 | 61 | 53.5° / 43.4° | 3.9h | 23d | 5.66" | 3 |
| January 2026 | 69 | 56.7° / 42.6° | 5.8h | 20d | 3.6" | 7 |
| February 2026 | 74 | 61.9° / 45.7° | 6.6h | 13d | 4.5" | 11 |
| March 2026 | 94 | 74.7° / 52.5° | 10.9h | 1d | 0.89" | 29 |
| April 2026 | 86 | 68.4° / 50.2° | 10.7h | 3d | 3.59" | 22 |
| May 2026 | 88 | 72.7° / 53° | 10.9h | 2d | 0.71" | 8 |
Last updated: 5/10/2026
Climate Trends
Average Temperature by Month
Average High
Average Low
Location Details
📍
Coordinates
38.1758, -121.6961
⛰️
Elevation
20 ft
🏷️
Type
Town
🏷️
Tags
#sunny#windy#waterfront#delta
Map
Loading map...