Hourly Weather Forecast - Saint Helena, CA

12 AM
47°F
0%
1mph
NNE
Mostly Clear
Humidity
78%
Feels like
47°F
Dew Point
40°F
1 AM
46°F
0%
1mph
NNE
Mostly Clear
Humidity
78%
Feels like
46°F
Dew Point
40°F
2 AM
45°F
0%
2mph
NNE
Mostly Clear
Humidity
77%
Feels like
45°F
Dew Point
38°F
3 AM
44°F
0%
2mph
NNE
Mostly Clear
Humidity
79%
Feels like
44°F
Dew Point
38°F
4 AM
44°F
0%
2mph
NNE
Mostly Clear
Humidity
80%
Feels like
44°F
Dew Point
38°F
5 AM
43°F
0%
2mph
NNE
Mostly Clear
Humidity
81%
Feels like
43°F
Dew Point
37°F
6 AM
42°F
0%
2mph
NNE
Mostly Clear
Humidity
80%
Feels like
42°F
Dew Point
37°F
7 AM
43°F
0%
2mph
NNE
Mostly Clear
Humidity
77%
Feels like
43°F
Dew Point
37°F
7:25 AM
8 AM
47°F
0%
2mph
NNE
Mostly Sunny
Humidity
73%
Feels like
47°F
Dew Point
38°F
9 AM
52°F
0%
2mph
NNE
Mostly Sunny
Humidity
66%
Feels like
52°F
Dew Point
41°F
10 AM
57°F
0%
3mph
NE
Sunny
Humidity
56%
Feels like
57°F
Dew Point
42°F
11 AM
62°F
0%
3mph
NE
Sunny
Humidity
49%
Feels like
62°F
Dew Point
42°F
12 PM
65°F
0%
3mph
NE
Sunny
Humidity
44%
Feels like
65°F
Dew Point
43°F
1 PM
68°F
0%
3mph
NE
Sunny
Humidity
42%
Feels like
68°F
Dew Point
44°F
2 PM
68°F
0%
2mph
NE
Sunny
Humidity
43%
Feels like
68°F
Dew Point
45°F
3 PM
67°F
0%
2mph
ENE
Sunny
Humidity
48%
Feels like
67°F
Dew Point
47°F
4 PM
64°F
0%
1mph
ENE
Sunny
Humidity
56%
Feels like
64°F
Dew Point
48°F
5 PM
59°F
0%
1mph
ENE
Sunny
Humidity
63%
Feels like
59°F
Dew Point
47°F
5:14 PM
6 PM
55°F
0%
1mph
NE
Clear
Humidity
67%
Feels like
55°F
Dew Point
45°F
7 PM
52°F
0%
1mph
NE
Mostly Clear
Humidity
70%
Feels like
52°F
Dew Point
43°F
8 PM
50°F
0%
1mph
NNE
Mostly Clear
Humidity
73%
Feels like
50°F
Dew Point
42°F
9 PM
49°F
0%
1mph
NNE
Mostly Clear
Humidity
75%
Feels like
49°F
Dew Point
41°F
10 PM
48°F
0%
1mph
NNE
Mostly Clear
Humidity
77%
Feels like
48°F
Dew Point
41°F
11 PM
47°F
0%
1mph
NNE
Mostly Clear
Humidity
78%
Feels like
47°F
Dew Point
40°F

Tuesday's Weather Outlook

Tuesday's Weather Outlook

Rain and snow showers will sweep thru the Great Lakes as the Western U.S. begins a pattern of quiet and dry weather.

(Image provided by NOAA)

Polar Vortex: What Is It?

People skating on a frozen pond on a clear day. (Image by Q K from Pixabay)

Safety Tips For Icy Surfaces

(Image provided by Pixabay.com)

Before a High Wind Event

Windchill chart

Dangers of Wind Chills

A snow-covered trail in Sparkill, N.Y. (H. Martinez, WeatherBug user)

Top Winter Hiking Destinations

loading ad...

Today's National Outlook

Hurricane Tracker

Allergy Forecast

Snow & Ski Forecast

Traffic Cameras

Weather Cameras

Traffic Cameras

Weather Cameras

Outdoor Sports Guide