St. Helena, CA

Right Now
47°
Fair
  • Humidity: 93%
  • Feels Like: 47°
  • Heat Index: 47°
  • Wind: 3 mph
  • Wind Chill: 47°
  • UV Index: 9 Very High
  • Sunrise: 05:54:08 AM
  • Sunset: 08:19:23 PM
  • Dew Point: 47°
  • Visibility: 9 mi

Today

Partly cloudy. High 77F. Winds WSW at 10 to 15 mph.

Tonight

Mainly clear. Low 52F. Winds W at 10 to 15 mph.

Tomorrow

A mainly sunny sky. High 81F. Winds SW at 10 to 15 mph.

Next 12 Hours

Time
Temp
Precip
4 AM
50°
0%
4 AM
50°

Wind: W @ 5mph

Precip: 0% Chance

Humidity: 88%

Wind Chill: 49°

Heat Index: 50°

UV Index: 0 Low

Visibility: 5 mi

5 AM
50°
0%
5 AM
50°

Wind: W @ 4mph

Precip: 0% Chance

Humidity: 89%

Wind Chill: 48°

Heat Index: 50°

UV Index: 0 Low

Visibility: 5 mi

6 AM
49°
0%
6 AM
49°

Wind: W @ 4mph

Precip: 0% Chance

Humidity: 91%

Wind Chill: 48°

Heat Index: 49°

UV Index: 0 Low

Visibility: 6 mi

7 AM
52°
0%
7 AM
52°

Wind: W @ 3mph

Precip: 0% Chance

Humidity: 87%

Wind Chill: 52°

Heat Index: 52°

UV Index: 0 Low

Visibility: 9 mi

8 AM
57°
0%
8 AM
57°

Wind: W @ 2mph

Precip: 0% Chance

Humidity: 79%

Wind Chill: 57°

Heat Index: 57°

UV Index: 1 Low

Visibility: 10 mi

9 AM
61°
0%
9 AM
61°

Wind: W @ 3mph

Precip: 0% Chance

Humidity: 71%

Wind Chill: 61°

Heat Index: 61°

UV Index: 2 Low

Visibility: 10 mi

10 AM
64°
0%
10 AM
64°

Wind: WSW @ 3mph

Precip: 0% Chance

Humidity: 65%

Wind Chill: 64°

Heat Index: 64°

UV Index: 4 Moderate

Visibility: 10 mi

11 AM
67°
0%
11 AM
67°

Wind: SW @ 3mph

Precip: 0% Chance

Humidity: 61%

Wind Chill: 67°

Heat Index: 67°

UV Index: 6 High

Visibility: 10 mi

12 PM
70°
0%
12 PM
70°

Wind: SW @ 4mph

Precip: 0% Chance

Humidity: 56%

Wind Chill: 70°

Heat Index: 70°

UV Index: 8 Very High

Visibility: 10 mi

1 PM
73°
0%
1 PM
73°

Wind: SW @ 6mph

Precip: 0% Chance

Humidity: 52%

Wind Chill: 73°

Heat Index: 73°

UV Index: 9 Very High

Visibility: 10 mi

2 PM
74°
2%
2 PM
74°

Wind: SW @ 7mph

Precip: 2% Chance

Humidity: 50%

Wind Chill: 74°

Heat Index: 74°

UV Index: 8 Very High

Visibility: 10 mi

3 PM
75°
2%
3 PM
75°

Wind: SW @ 9mph

Precip: 2% Chance

Humidity: 48%

Wind Chill: 75°

Heat Index: 75°

UV Index: 7 High

Visibility: 10 mi