St. Helena, CA

Right Now
51°
Cloudy
  • Humidity: 95%
  • Feels Like: 50°
  • Heat Index: 51°
  • Wind: 6 mph
  • Wind Chill: 50°
  • UV Index: 9 Very High
  • Sunrise: 05:53:30 AM
  • Sunset: 08:19:57 PM
  • Dew Point: 50°
  • Visibility: 4 mi

Today

Showers in the morning, then partly cloudy in the afternoon. Thunder possible. High 61F. Winds W at 15 to 25 mph. Chance of rain 60%.

Tonight

Mainly clear skies. Low 47F. Winds WNW at 10 to 20 mph.

Tomorrow

Partly cloudy skies. High 76F. Winds NNW at 5 to 10 mph.

Next 12 Hours

Time
Temp
Precip
1 AM
51°
5%
1 AM
51°

Wind: SSW @ 7mph

Precip: 5% Chance

Humidity: 95%

Wind Chill: 49°

Heat Index: 51°

UV Index: 0 Low

Visibility: 3 mi

2 AM
52°
2%
2 AM
52°

Wind: WSW @ 6mph

Precip: 2% Chance

Humidity: 94%

Wind Chill: 50°

Heat Index: 52°

UV Index: 0 Low

Visibility: 3 mi

3 AM
51°
3%
3 AM
51°

Wind: WSW @ 7mph

Precip: 3% Chance

Humidity: 93%

Wind Chill: 49°

Heat Index: 51°

UV Index: 0 Low

Visibility: 4 mi

4 AM
50°
11%
4 AM
50°

Wind: W @ 8mph

Precip: 11% Chance

Humidity: 91%

Wind Chill: 47°

Heat Index: 50°

UV Index: 0 Low

Visibility: 4 mi

5 AM
50°
24%
5 AM
50°

Wind: WSW @ 8mph

Precip: 24% Chance

Humidity: 92%

Wind Chill: 46°

Heat Index: 50°

UV Index: 0 Low

Visibility: 4 mi

6 AM
50°
48%
6 AM
50°

Wind: WSW @ 8mph

Precip: 48% Chance

Humidity: 93%

Wind Chill: 47°

Heat Index: 50°

UV Index: 0 Low

Visibility: 3 mi

7 AM
52°
55%
7 AM
52°

Wind: W @ 10mph

Precip: 55% Chance

Humidity: 92%

Wind Chill: 48°

Heat Index: 52°

UV Index: 0 Low

Visibility: 4 mi

8 AM
53°
59%
8 AM
53°

Wind: WSW @ 10mph

Precip: 59% Chance

Humidity: 89%

Wind Chill: 49°

Heat Index: 53°

UV Index: 1 Low

Visibility: 5 mi

9 AM
54°
52%
9 AM
54°

Wind: W @ 11mph

Precip: 52% Chance

Humidity: 84%

Wind Chill: 51°

Heat Index: 54°

UV Index: 2 Low

Visibility: 7 mi

10 AM
56°
42%
10 AM
56°

Wind: W @ 12mph

Precip: 42% Chance

Humidity: 77%

Wind Chill: 53°

Heat Index: 56°

UV Index: 3 Moderate

Visibility: 8 mi

11 AM
58°
59%
11 AM
58°

Wind: W @ 13mph

Precip: 59% Chance

Humidity: 73%

Wind Chill: 55°

Heat Index: 58°

UV Index: 4 Moderate

Visibility: 9 mi

12 PM
59°
52%
12 PM
59°

Wind: W @ 14mph

Precip: 52% Chance

Humidity: 67%

Wind Chill: 56°

Heat Index: 59°

UV Index: 6 High

Visibility: 10 mi

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