Saint Helena, CA 94574 Hourly Weather

Napa County5:31 AM PDT38.51°N, 122.46°W

Next 48 hours

5 AM 8 AM 11 AM 2 PM 5 PM 8 PM 11 PM Sat Oct 24 2 AM 5 AM 8 AM 11 AM 2 PM 5 PM 8 PM 11 PM Sun Oct 25 2 AM 50° 60° 70° %
TemperatureFeels likeChance of precipitationNight
Friday, October 2319 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
5 AM Areas Of Fog 49° 49° 1% 0.00 in Calm 100% 49° 54% 0
6 AM Areas Of Fog 49° 49° 1% 0.00 in WNW 1 100% 49° 51% 0
7 AM Patchy Fog 47° 47° 2% 0.00 in W 1 100% 47° 47% 0
8 AM Mostly Sunny 49° 49° 2% 0.00 in WNW 2 100% 49° 38% 0
9 AM Sunny 52° 52° 1% 0.00 in NW 3 G8 100% 52° 25% 1
10 AM Sunny 56° 56° 0% 0.00 in NNE 5 G12 100% 56° 19% 2
11 AM Sunny 60° 60° 0% 0.00 in NNE 7 G15 88% 56° 12% 3
12 PM Sunny 66° 66° 0% 0.00 in NNE 8 G16 70% 56° 7% 4
1 PM Sunny 68° 68° 0% 0.00 in NNE 7 G16 59% 53° 4% 4
2 PM Sunny 70° 70° 0% 0.00 in N 6 G17 49% 50° 4% 4
3 PM Sunny 72° 72° 0% 0.00 in NNE 6 G17 42% 47° 2% 3
4 PM Sunny 72° 72° 0% 0.00 in N 5 G17 35% 42° 0% 1
5 PM Sunny 70° 70° 0% 0.00 in N 3 G14 35% 42° 1% 0
6 PM Clear 67° 67° 0% 0.00 in NNW 2 G10 39% 41° 0% 0
7 PM Clear 61° 61° 0% 0.00 in NNW 2 G9 43% 38° 0% 0
8 PM Clear 58° 58° 0% 0.00 in NW 3 G12 45% 37° 3% 0
9 PM Clear 56° 56° 0% 0.00 in NNW 7 G26 44% 34° 3% 0
10 PM Clear 55° 55° 0% 0.00 in NNW 10 G30 42% 33° 4% 0
11 PM Mostly Clear 54° 54° 0% 0.00 in NNW 10 G30 43% 32° 6% 0
Saturday, October 2424 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 53° 53° 0% 0.00 in N 9 G26 43% 31° 12% 0
1 AM Mostly Clear 52° 52° 0% 0.00 in NNW 8 G23 44% 31° 16% 0
2 AM Mostly Clear 50° 47° 0% 0.00 in NNW 7 G18 45% 29° 18% 0
3 AM Mostly Clear 49° 47° 0% 0.00 in NNW 6 G16 47% 30° 19% 0
4 AM Mostly Clear 48° 46° 0% 0.00 in N 5 G14 46% 28° 16% 0
5 AM Mostly Clear 47° 44° 0% 0.00 in N 6 G13 48% 28° 17% 0
6 AM Sunny 47° 45° 0% 0.00 in N 6 G13 49% 29° 17% 0
7 AM Sunny 46° 43° 0% 0.00 in N 6 G13 53% 30° 17% 0
8 AM Sunny 46° 43° 0% 0.00 in N 6 G13 55% 31° 7% 0
9 AM Sunny 52° 52° 0% 0.00 in N 6 G13 51% 35° 7% 1
10 AM Sunny 59° 59° 0% 0.00 in N 6 G13 43% 37° 7% 2
11 AM Sunny 65° 65° 0% 0.00 in NNE 3 G12 38% 38° 1% 3
12 PM Sunny 69° 69° 0% 0.00 in NNE 3 G12 34% 40° 1% 4
1 PM Sunny 74° 74° 0% 0.00 in NNE 3 G12 30% 40° 1% 4
2 PM Sunny 76° 76° 0% 0.00 in Calm 28% 40° 5% 4
3 PM Sunny 77° 77° 0% 0.00 in Calm 28% 41° 5% 3
4 PM Sunny 77° 77° 0% 0.00 in Calm 28% 41° 5% 1
5 PM Sunny 75° 75° 0% 0.00 in Calm 32% 43° 7% 0
6 PM Mostly Clear 70° 70° 0% 0.00 in Calm 41% 45° 7% 0
7 PM Mostly Clear 64° 64° 0% 0.00 in Calm 51% 45° 7% 0
8 PM Clear 57° 57° 0% 0.00 in Calm 60% 44° 1% 0
9 PM Clear 54° 54° 0% 0.00 in Calm 66% 42° 1% 0
10 PM Clear 52° 52° 0% 0.00 in Calm 68% 41° 1% 0
11 PM Mostly Clear 50° 50° 0% 0.00 in Calm 69% 40° 8% 0
Sunday, October 2524 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 49° 49° 0% 0.00 in Calm 70% 40° 8% 0
1 AM Mostly Clear 48° 48° 0% 0.00 in Calm 71% 39° 8% 0
2 AM Mostly Clear 47° 47° 0% 0.00 in Calm 72% 39° 25% 0
3 AM Mostly Clear 46° 46° 0% 0.00 in Calm 73% 38° 25% 0
4 AM Mostly Clear 45° 45° 0% 0.00 in Calm 74% 37° 25% 0
5 AM Partly Cloudy 44° 44° 0% 0.00 in Calm 76% 36° 28% 0
6 AM Mostly Sunny 42° 42° 0% 0.00 in Calm 80% 36° 28% 0
7 AM Mostly Sunny 41° 41° 0% 0.00 in Calm 83% 36° 28% 0
8 AM Mostly Sunny 42° 42° 0% 0.00 in NNE 1 82% 37° 40% 0
9 AM Mostly Sunny 48° 48° 0% 0.00 in NNE 1 73% 40° 40% 1
10 AM Mostly Sunny 56° 56° 0% 0.00 in NNE 1 62% 43° 40% 2
11 AM Mostly Sunny 63° 63° 0% 0.00 in E 1 51% 44° 26% 3
12 PM Mostly Sunny 68° 68° 0% 0.00 in E 1 44% 46° 26% 4
1 PM Mostly Sunny 72° 72° 0% 0.00 in E 1 40% 47° 26% 4
2 PM Mostly Sunny 74° 74° 0% 0.00 in SSE 1 G7 38% 47° 27% 4
3 PM Mostly Sunny 76° 76° 0% 0.00 in SSE 1 G7 37% 48° 27% 2
4 PM Mostly Sunny 75° 75° 0% 0.00 in SSE 1 G7 38% 48° 27% 1
5 PM Mostly Sunny 73° 73° 0% 0.00 in SSW 2 G8 41% 48° 37% 0
6 PM Partly Cloudy 69° 69° 0% 0.00 in SSW 2 G8 49% 49° 37% –
7 PM Partly Cloudy 63° 63° 0% 0.00 in SSW 2 G8 59% 49° 37% –
8 PM Partly Cloudy 58° 58° 0% 0.00 in Calm 68% 48° 33% –
9 PM Partly Cloudy 55° 55° 0% 0.00 in Calm 74% 47° 33% –
10 PM Partly Cloudy 52° 52° 0% 0.00 in Calm 78% 45° 33% –
11 PM Mostly Clear 50° 50° 0% 0.00 in Calm 81% 45° 25% –
Monday, October 2624 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 49° 49° 0% 0.00 in Calm 84% 44° 25% –
1 AM Mostly Clear 47° 47° 0% 0.00 in Calm 87% 44° 25% –
2 AM Partly Cloudy 46° 46° 0% 0.00 in Calm 90% 44° 36% –
3 AM Partly Cloudy 45° 45° 0% 0.00 in Calm 91% 43° 36% –
4 AM Patchy Fog 44° 44° 0% 0.00 in Calm 93% 42° 36% –
5 AM Patchy Fog 43° 43° 0% 0.00 in Calm 94% 42° 42% –
6 AM Areas Of Fog 42° 42° 0% 0.00 in Calm 98% 41° 42% –
7 AM Areas Of Fog 41° 41° 0% 0.00 in Calm 100% 41° 42% –
8 AM Patchy Fog 42° 42° 0% 0.00 in WNW 1 100% 42° 43% –
9 AM Mostly Sunny 48° 48° 0% 0.00 in WNW 1 92% 45° 43% –
10 AM Mostly Sunny 55° 55° 0% 0.00 in WNW 1 81% 49° 43% –
11 AM Sunny 61° 61° 0% 0.00 in WSW 1 70% 51° 15% –
12 PM Sunny 66° 66° 0% 0.00 in WSW 1 61% 52° 15% –
1 PM Sunny 69° 69° 0% 0.00 in WSW 1 53% 51° 15% –
2 PM Sunny 71° 71° 0% 0.00 in WSW 2 G12 48% 50° 11% –
3 PM Sunny 72° 72° 0% 0.00 in WSW 2 G12 46% 50° 11% –
4 PM Sunny 71° 71° 0% 0.00 in WSW 2 G12 47% 50° 11% –
5 PM Sunny 68° 69° 1% 0.00 in WSW 3 G12 50% 49° 15% –
6 PM Mostly Clear 64° 64° 1% 0.00 in WSW 3 G12 59% 49° 15% –
7 PM Mostly Clear 59° 59° 1% 0.00 in WSW 3 G12 69% 49° 15% –
8 PM Mostly Clear 55° 55° 1% 0.00 in Calm 78% 48° 15% –
9 PM Mostly Clear 52° 52° 1% 0.00 in Calm 84% 48° 15% –
10 PM Mostly Clear 50° 50° 1% 0.00 in Calm 88% 47° 15% –
11 PM Mostly Clear 48° 48° 1% 0.00 in W 1 90% 46° 21% –
Tuesday, October 2724 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Patchy Fog 47° 47° 1% 0.00 in W 1 94% 45° 21% –
1 AM Patchy Fog 45° 45° 1% 0.00 in W 1 97% 44° 21% –
2 AM Patchy Fog 44° 44° 1% 0.00 in WNW 1 99% 44° 21% –
3 AM Patchy Fog 44° 44° 1% 0.00 in WNW 1 100% 44° 21% –
4 AM Patchy Fog 43° 43° 1% 0.00 in WNW 1 100% 43° 21% –
5 AM Patchy Fog 43° 43° 1% 0.00 in NNW 1 100% 43° 37% –
6 AM Patchy Fog 41° 41° 1% 0.00 in NNW 1 100% 41° 37% –
7 AM Patchy Fog 40° 40° 1% 0.00 in NNW 1 100% 40° 37% –
8 AM Mostly Sunny 41° 41° 1% 0.00 in N 2 100% 41° 37% –
9 AM Mostly Sunny 46° 46° 1% 0.00 in N 2 89% 43° 37% –
10 AM Mostly Sunny 54° 54° 1% 0.00 in N 2 75% 46° 37% –
11 AM Sunny 61° 61° 1% 0.00 in Calm 64% 48° 25% –
12 PM Sunny 65° 65° 1% 0.00 in Calm 56% 49° 25% –
1 PM Sunny 68° 68° 1% 0.00 in Calm 50% 48° 25% –
2 PM Sunny 69° 69° 1% 0.00 in Calm 46% 48° 25% –
3 PM Sunny 70° 70° 1% 0.00 in Calm 44% 48° 25% –
4 PM Sunny 70° 70° 1% 0.00 in Calm 45% 47° 25% –
5 PM Mostly Sunny 68° 68° 0% 0.00 in Calm 48% 47° 26% –
6 PM Partly Cloudy 64° 64° 0% 0.00 in Calm 54% 47° 26% –
7 PM Partly Cloudy 60° 60° 0% 0.00 in Calm 64% 48° 26% –
8 PM Partly Cloudy 55° 55° 0% 0.00 in Calm 75% 47° 26% –
9 PM Partly Cloudy 52° 52° 0% 0.00 in Calm 81% 46° 26% –
10 PM Partly Cloudy 50° 50° 0% 0.00 in Calm 84% 46° 26% –
11 PM Partly Cloudy 48° 48° 0% 0.00 in Calm 87% 45° 35% –
Wednesday, October 2824 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Partly Cloudy 47° 47° 0% 0.00 in Calm 90% 44° 35% –
1 AM Partly Cloudy 46° 46° 0% 0.00 in Calm 93% 44° 35% –
2 AM Partly Cloudy 45° 45° 0% 0.00 in Calm 94% 43° 35% –
3 AM Partly Cloudy 44° 44° 0% 0.00 in Calm 94% 43° 35% –
4 AM Patchy Fog 44° 44° 0% 0.00 in Calm 94% 42° 35% –
5 AM Patchy Fog 44° 44° 0% 0.00 in Calm 93% 42° 61% –
6 AM Areas Of Fog 42° 42° 0% 0.00 in Calm 98% 42° 61% –
7 AM Areas Of Fog 41° 41° 0% 0.00 in Calm 100% 41° 61% –
8 AM Areas Of Fog 42° 42° 0% 0.00 in Calm 99% 42° 61% –
9 AM Partly Sunny 47° 47° 0% 0.00 in Calm 87% 43° 61% –
10 AM Partly Sunny 54° 54° 0% 0.00 in Calm 73% 45° 61% –
11 AM Mostly Sunny 60° 60° 0% 0.00 in Calm 61% 47° 44% –
12 PM Mostly Sunny 65° 65° 0% 0.00 in Calm 54% 48° 44% –
1 PM Mostly Sunny 67° 67° 0% 0.00 in Calm 49% 48° 44% –
2 PM Mostly Sunny 69° 69° 0% 0.00 in Calm 46% 47° 44% –
3 PM Mostly Sunny 70° 70° 0% 0.00 in Calm 45% 47° 44% –
4 PM Mostly Sunny 69° 69° 0% 0.00 in Calm 47% 48° 44% –
5 PM Mostly Sunny 67° 67° 0% 0.00 in Calm 50% 48° 48% –
6 PM Partly Cloudy 63° 63° 0% 0.00 in Calm 57% 48° 48% –
7 PM Partly Cloudy 59° 59° 0% 0.00 in Calm 67% 48° 48% –
8 PM Partly Cloudy 55° 55° 0% 0.00 in Calm 76% 48° 48% –
9 PM Partly Cloudy 52° 52° 0% 0.00 in Calm 82% 47° 48% –
10 PM Partly Cloudy 50° 50° 0% 0.00 in Calm 86% 46° 48% –
11 PM Partly Cloudy 48° 49° 0% 0.00 in Calm 89% 45° 40% –
Thursday, October 2916 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Patchy Fog 47° 47° 0% 0.00 in Calm 93% 45° 40% –
1 AM Patchy Fog 45° 45° 0% 0.00 in Calm 97% 44° 40% –
2 AM Areas Of Fog 44° 44° 0% 0.00 in Calm 99% 44° 40% –
3 AM Areas Of Fog 44° 44° 0% 0.00 in Calm 100% 44° 40% –
4 AM Areas Of Fog 44° 44° 0% 0.00 in Calm 100% 44° 40% –
5 AM Areas Of Fog 44° 44° 1% 0.00 in Calm 100% 43° 56% –
6 AM Areas Of Fog 42° 42° 1% 0.00 in Calm 100% 42° 56% –
7 AM Areas Of Fog 42° 42° 1% 0.00 in Calm 100% 42° 56% –
8 AM Areas Of Fog 43° 43° 1% 0.00 in Calm 98% 42° 56% –
9 AM Patchy Fog 48° 48° 1% 0.00 in Calm 89% 44° 56% –
10 AM Partly Sunny 54° 54° 1% 0.00 in Calm 78% 47° 56% –
11 AM Mostly Sunny 59° 59° 1% 0.00 in Calm 69% 49° 30% –
12 PM Mostly Sunny 63° 63° 1% 0.00 in Calm 61% 50° 30% –
1 PM Mostly Sunny 66° 66° 1% 0.00 in Calm 55% 49° 30% –
2 PM Mostly Sunny 67° 67° 1% 0.00 in WSW 1 G8 52% 49° 30% –
3 PM Mostly Sunny 68° 68° 1% 0.00 in WSW 1 G8 51% 49° 30% –

National Weather Service forecast updated 3 hrs ago. Precipitation amounts are the forecast liquid equivalent for each hour.

Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.