Saint Helena, CA 94574 Hourly Weather

Napa County11:51 AM PDT38.51°N, 122.46°W

Next 48 hours

11 AM 2 PM 5 PM 8 PM 11 PM Fri Oct 23 2 AM 5 AM 8 AM 11 AM 2 PM 5 PM 8 PM 11 PM Sat Oct 24 2 AM 5 AM 8 AM 40° 45° 50° 55° 60° 65° 70° 75° %
TemperatureFeels likeChance of precipitationNight
Thursday, October 2213 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
11 AM Light Rain Likely 60° 60° 62% 0.01 in SSE 2 100% 60° 75% 3
12 PM Light Rain Likely 62° 62° 60% 0.01 in S 2 G8 100% 62° 73% 3
1 PM Chance Light Rain 63° 63° 39% 0.01 in SSW 2 G9 100% 63° 59% 4
2 PM Chance Light Rain 66° 66° 32% 0.01 in SW 2 G10 98% 65° 55% 3
3 PM Chance Light Rain 65° 65° 35% 0.01 in SW 2 G10 90% 62° 57% 2
4 PM Chance Light Rain 65° 65° 31% 0.01 in WSW 2 G12 89% 62° 54% 1
5 PM Partly Sunny 65° 65° 12% 0.00 in W 2 G10 86% 61° 62% 0
6 PM Mostly Cloudy 63° 63° 14% 0.00 in WNW 1 90% 60° 59% 0
7 PM Patchy Fog 60° 60° 20% 0.00 in Calm 96% 59° 44% 0
8 PM Areas Of Fog 58° 59° 6% 0.00 in Calm 99% 58° 55% 0
9 PM Areas Of Fog 56° 56° 5% 0.00 in Calm 100% 56° 54% 0
10 PM Areas Of Fog 55° 55° 3% 0.00 in Calm 100% 55° 37% 0
11 PM Areas Of Fog 53° 53° 2% 0.00 in Calm 100% 53° 59% 0
Friday, October 2324 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Areas Of Fog 52° 52° 2% 0.00 in Calm 100% 52° 41% 0
1 AM Areas Of Fog 52° 52° 1% 0.00 in Calm 100% 52° 43% 0
2 AM Areas Of Fog 51° 51° 1% 0.00 in Calm 100% 51° 50% 0
3 AM Areas Of Fog 50° 50° 0% 0.00 in Calm 100% 50° 62% 0
4 AM Areas Of Fog 49° 49° 0% 0.00 in Calm 100% 49° 71% 0
5 AM Areas Of Fog 49° 49° 0% 0.00 in Calm 100% 49° 69% 0
6 AM Areas Of Fog 49° 49° 0% 0.00 in Calm 100% 49° 69% 0
7 AM Areas Of Fog 47° 47° 0% 0.00 in Calm 100% 47° 69% 0
8 AM Partly Sunny 49° 49° 0% 0.00 in N 3 G12 100% 49° 62% 0
9 AM Partly Sunny 52° 52° 0% 0.00 in N 3 G12 100% 52° 62% 1
10 AM Partly Sunny 57° 57° 0% 0.00 in N 3 G12 100% 57° 62% 2
11 AM Sunny 60° 60° 0% 0.00 in NNE 8 G16 90% 57° 6% 3
12 PM Sunny 65° 65° 0% 0.00 in NNE 8 G16 75% 57° 6% 4
1 PM Sunny 68° 68° 0% 0.00 in NNE 8 G16 63% 55° 6% 4
2 PM Sunny 70° 70° 0% 0.00 in N 5 G16 54% 52° 3% 4
3 PM Sunny 72° 72° 0% 0.00 in N 5 G16 46% 50° 3% 3
4 PM Sunny 72° 72° 0% 0.00 in N 5 G16 40% 46° 3% 1
5 PM Sunny 72° 72° 0% 0.00 in N 1 G12 35% 43° 1% 0
6 PM Clear 68° 69° 0% 0.00 in N 1 G12 40% 44° 1% 0
7 PM Clear 63° 63° 0% 0.00 in N 1 G12 48% 43° 1% 0
8 PM Clear 58° 58° 0% 0.00 in NNW 1 54% 42° 1% 0
9 PM Clear 55° 55° 0% 0.00 in NNW 1 56% 40° 1% 0
10 PM Clear 53° 53° 0% 0.00 in NNW 1 56% 38° 1% 0
11 PM Mostly Clear 52° 52° 0% 0.00 in N 9 G25 54% 36° 6% 0
Saturday, October 2424 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 51° 47° 0% 0.00 in N 9 G25 52% 34° 6% 0
1 AM Mostly Clear 50° 46° 0% 0.00 in N 9 G25 50% 32° 6% 0
2 AM Mostly Clear 48° 46° 0% 0.00 in N 6 G16 48% 30° 20% 0
3 AM Mostly Clear 47° 45° 0% 0.00 in N 6 G16 48% 28° 20% 0
4 AM Mostly Clear 46° 43° 0% 0.00 in N 6 G16 48% 28° 20% 0
5 AM Mostly Clear 45° 44° 0% 0.00 in N 3 G10 49% 27° 15% 0
6 AM Sunny 44° 42° 0% 0.00 in N 3 G10 51% 27° 15% 0
7 AM Sunny 43° 42° 0% 0.00 in N 3 G10 53% 28° 15% 0
8 AM Sunny 45° 43° 0% 0.00 in N 5 53% 29° 9% 0
9 AM Sunny 50° 49° 0% 0.00 in N 5 48% 31° 9% 1
10 AM Sunny 57° 57° 0% 0.00 in N 5 42% 34° 9% 2
11 AM Sunny 64° 64° 0% 0.00 in NNE 5 G10 36% 36° 0% 3
12 PM Sunny 68° 69° 0% 0.00 in NNE 5 G10 32% 38° 0% 4
1 PM Sunny 72° 72° 0% 0.00 in NNE 5 G10 30% 39° 0% 4
2 PM Sunny 75° 75° 0% 0.00 in NNE 1 G8 28% 40° 1% 4
3 PM Sunny 78° 78° 0% 0.00 in NNE 1 G8 26% 40° 1% 3
4 PM Sunny 78° 79° 0% 0.00 in NNE 1 G8 26% 40° 1% 1
5 PM Sunny 78° 78° 0% 0.00 in Calm 28% 42° 1% 0
6 PM Clear 74° 74° 0% 0.00 in Calm 36% 45° 1% 0
7 PM Clear 69° 69° 0% 0.00 in Calm 45% 47° 1% 0
8 PM Clear 63° 63° 0% 0.00 in Calm 54% 46° 4% 0
9 PM Clear 59° 59° 0% 0.00 in Calm 59% 45° 4% 0
10 PM Clear 55° 55° 0% 0.00 in Calm 62% 42° 4% 0
11 PM Mostly Clear 52° 52° 0% 0.00 in Calm 64% 40° 11% 0
Sunday, October 2524 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 50° 50° 0% 0.00 in Calm 66% 39° 11% –
1 AM Mostly Clear 49° 49° 0% 0.00 in Calm 67% 38° 11% –
2 AM Partly Cloudy 48° 48° 0% 0.00 in Calm 67% 38° 29% –
3 AM Partly Cloudy 47° 47° 0% 0.00 in Calm 68% 37° 29% –
4 AM Partly Cloudy 46° 46° 0% 0.00 in Calm 70% 37° 29% –
5 AM Partly Cloudy 45° 45° 0% 0.00 in Calm 71% 36° 30% –
6 AM Mostly Sunny 43° 43° 0% 0.00 in Calm 74% 36° 30% –
7 AM Mostly Sunny 42° 43° 0% 0.00 in Calm 77% 36° 30% –
8 AM Mostly Sunny 44° 44° 0% 0.00 in NNE 2 76% 37° 37% –
9 AM Mostly Sunny 49° 49° 0% 0.00 in NNE 2 69% 39° 37% –
10 AM Mostly Sunny 56° 56° 0% 0.00 in NNE 2 59% 42° 37% –
11 AM Mostly Sunny 63° 63° 0% 0.00 in ENE 1 50% 44° 29% –
12 PM Mostly Sunny 68° 68° 0% 0.00 in ENE 1 45% 46° 29% –
1 PM Mostly Sunny 72° 72° 0% 0.00 in ENE 1 42% 48° 29% –
2 PM Mostly Sunny 74° 74° 0% 0.00 in Calm 40% 49° 38% –
3 PM Mostly Sunny 76° 76° 0% 0.00 in Calm 38% 48° 38% –
4 PM Mostly Sunny 76° 76° 0% 0.00 in Calm 37% 48° 38% –
5 PM Mostly Sunny 74° 74° 0% 0.00 in Calm 38% 47° 44% –
6 PM Partly Cloudy 69° 69° 0% 0.00 in Calm 45% 47° 44% –
7 PM Partly Cloudy 64° 64° 0% 0.00 in Calm 53% 47° 44% –
8 PM Partly Cloudy 60° 60° 0% 0.00 in Calm 60% 46° 44% –
9 PM Partly Cloudy 57° 57° 0% 0.00 in Calm 65% 46° 44% –
10 PM Partly Cloudy 55° 55° 0% 0.00 in Calm 68% 44° 44% –
11 PM Partly Cloudy 53° 53° 0% 0.00 in Calm 70% 44° 36% –
Monday, October 2624 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Partly Cloudy 51° 51° 0% 0.00 in Calm 75% 43° 36% –
1 AM Partly Cloudy 49° 49° 0% 0.00 in Calm 79% 43° 36% –
2 AM Partly Cloudy 48° 48° 0% 0.00 in Calm 83% 43° 36% –
3 AM Partly Cloudy 47° 47° 0% 0.00 in Calm 84% 43° 36% –
4 AM Partly Cloudy 47° 47° 0% 0.00 in Calm 85% 43° 36% –
5 AM Partly Cloudy 47° 47° 1% 0.00 in Calm 85% 43° 39% –
6 AM Mostly Sunny 46° 46° 1% 0.00 in Calm 89% 43° 39% –
7 AM Mostly Sunny 45° 45° 1% 0.00 in Calm 92% 43° 39% –
8 AM Mostly Sunny 46° 46° 1% 0.00 in N 2 91% 43° 39% –
9 AM Mostly Sunny 50° 50° 1% 0.00 in N 2 82% 45° 39% –
10 AM Mostly Sunny 57° 57° 1% 0.00 in N 2 70% 48° 39% –
11 AM Sunny 63° 63° 1% 0.00 in NW 1 60% 49° 25% –
12 PM Sunny 68° 68° 1% 0.00 in NW 1 52% 50° 25% –
1 PM Sunny 72° 72° 1% 0.00 in NW 1 46% 50° 25% –
2 PM Sunny 74° 74° 1% 0.00 in SW 1 G8 42% 49° 25% –
3 PM Sunny 75° 75° 1% 0.00 in SW 1 G8 40% 49° 25% –
4 PM Sunny 75° 75° 1% 0.00 in SW 1 G8 40% 49° 25% –
5 PM Mostly Sunny 73° 73° 2% 0.00 in Calm 42% 48° 29% –
6 PM Partly Cloudy 69° 69° 2% 0.00 in Calm 47% 48° 29% –
7 PM Partly Cloudy 64° 64° 2% 0.00 in Calm 56% 48° 29% –
8 PM Partly Cloudy 59° 59° 2% 0.00 in Calm 64% 47° 29% –
9 PM Partly Cloudy 56° 56° 2% 0.00 in Calm 69% 46° 29% –
10 PM Partly Cloudy 54° 54° 2% 0.00 in Calm 72% 45° 29% –
11 PM Partly Cloudy 52° 52° 0% 0.00 in Calm 75% 44° 30% –
Tuesday, October 2724 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Partly Cloudy 50° 50° 0% 0.00 in Calm 78% 44° 30% –
1 AM Partly Cloudy 49° 49° 0% 0.00 in Calm 82% 43° 30% –
2 AM Partly Cloudy 48° 48° 0% 0.00 in Calm 85% 43° 30% –
3 AM Partly Cloudy 47° 47° 0% 0.00 in Calm 87% 43° 30% –
4 AM Partly Cloudy 46° 46° 0% 0.00 in Calm 87% 43° 30% –
5 AM Partly Cloudy 46° 46° 1% 0.00 in Calm 88% 43° 44% –
6 AM Mostly Sunny 45° 45° 1% 0.00 in Calm 92% 43° 44% –
7 AM Patchy Fog 45° 45° 1% 0.00 in Calm 95% 43° 44% –
8 AM Mostly Sunny 46° 46° 1% 0.00 in N 1 93% 44° 44% –
9 AM Mostly Sunny 51° 51° 1% 0.00 in N 1 82% 46° 44% –
10 AM Mostly Sunny 57° 57° 1% 0.00 in N 1 70% 48° 44% –
11 AM Sunny 64° 64° 0% 0.00 in Calm 59% 49° 25% –
12 PM Sunny 68° 68° 0% 0.00 in Calm 51% 49° 25% –
1 PM Sunny 71° 71° 0% 0.00 in Calm 46% 49° 25% –
2 PM Sunny 73° 73° 0% 0.00 in Calm 42% 49° 25% –
3 PM Sunny 75° 75° 0% 0.00 in Calm 40% 48° 25% –
4 PM Sunny 75° 75° 0% 0.00 in Calm 39% 48° 25% –
5 PM Mostly Sunny 73° 73° 0% 0.00 in Calm 40% 48° 36% –
6 PM Partly Cloudy 69° 69° 0% 0.00 in Calm 46% 47° 36% –
7 PM Partly Cloudy 64° 64° 0% 0.00 in Calm 55% 47° 36% –
8 PM Partly Cloudy 59° 59° 0% 0.00 in Calm 64% 47° 36% –
9 PM Partly Cloudy 56° 56° 0% 0.00 in Calm 70% 46° 36% –
10 PM Partly Cloudy 54° 54° 0% 0.00 in Calm 73% 46° 36% –
11 PM Partly Cloudy 52° 52° 1% 0.00 in Calm 76% 45° 41% –
Wednesday, October 2819 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Partly Cloudy 50° 50° 1% 0.00 in Calm 80% 44° 41% –
1 AM Partly Cloudy 49° 49° 1% 0.00 in Calm 83% 44° 41% –
2 AM Partly Cloudy 48° 48° 1% 0.00 in Calm 86% 44° 41% –
3 AM Partly Cloudy 47° 47° 1% 0.00 in Calm 87% 44° 41% –
4 AM Partly Cloudy 47° 47° 1% 0.00 in Calm 88% 43° 41% –
5 AM Partly Cloudy 46° 47° 0% 0.00 in Calm 88% 43° 47% –
6 AM Mostly Sunny 45° 45° 0% 0.00 in Calm 92% 43° 47% –
7 AM Patchy Fog 45° 45° 0% 0.00 in Calm 94% 43° 47% –
8 AM Mostly Sunny 46° 46° 0% 0.00 in Calm 92% 44° 47% –
9 AM Mostly Sunny 51° 51° 0% 0.00 in Calm 81% 46° 47% –
10 AM Mostly Sunny 57° 57° 0% 0.00 in Calm 69% 47° 47% –
11 AM Mostly Sunny 63° 63° 1% 0.00 in Calm 59% 49° 31% –
12 PM Mostly Sunny 68° 68° 1% 0.00 in Calm 52% 49° 31% –
1 PM Mostly Sunny 71° 71° 1% 0.00 in Calm 47% 49° 31% –
2 PM Mostly Sunny 72° 72° 1% 0.00 in Calm 44% 49° 31% –
3 PM Mostly Sunny 74° 74° 1% 0.00 in Calm 42% 49° 31% –
4 PM Mostly Sunny 74° 74° 1% 0.00 in Calm 42% 49° 31% –
5 PM Mostly Sunny 72° 72° 4% 0.00 in Calm 44% 49° 34% –
6 PM Partly Cloudy 68° 68° 4% 0.00 in Calm 50% 49° 34% –

National Weather Service forecast updated 10 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 4Conservative index and reflects what the press published. Terms of use.