Alton, IL 62002 Hourly Weather

Madison County7:04 AM CDT38.91°N, 90.16°W

Next 48 hours

7 AM 10 AM 1 PM 4 PM 7 PM 10 PM Thu Oct 22 1 AM 4 AM 7 AM 10 AM 1 PM 4 PM 7 PM 10 PM Fri Oct 23 1 AM 4 AM 45° 50° 55° 60° 65° 70° 75° %
TemperatureFeels likeChance of precipitationNight
Wednesday, October 2117 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
7 AM Patchy Fog 45° 45° 1% 0.00 in Calm 93% 43° 30% 0
8 AM Mostly Sunny 48° 48° 1% 0.00 in Calm 86% 44° 30% 0
9 AM Mostly Sunny 53° 53° 1% 0.00 in Calm 80% 47° 26% 1
10 AM Sunny 61° 61° 1% 0.00 in Calm 62% 48° 15% 2
11 AM Sunny 65° 65° 3% 0.00 in S 2 54% 48° 13% 4
12 PM Sunny 69° 69° 3% 0.00 in S 2 47% 48° 15% 5
1 PM Sunny 72° 72° 3% 0.00 in S 2 41% 47° 18% 5
2 PM Sunny 73° 73° 2% 0.00 in S 2 38% 46° 16% 4
3 PM Sunny 74° 74° 2% 0.00 in SW 2 35% 45° 16% 3
4 PM Sunny 75° 75° 3% 0.00 in SW 1 34% 45° 19% 1
5 PM Sunny 73° 73° 3% 0.00 in S 1 37% 45° 19% 0
6 PM Mostly Clear 70° 70° 3% 0.00 in S 1 41% 45° 17% 0
7 PM Mostly Clear 66° 66° 2% 0.00 in Calm 48% 46° 20% 0
8 PM Mostly Clear 60° 60° 2% 0.00 in Calm 62% 47° 17% 0
9 PM Mostly Clear 59° 59° 2% 0.00 in Calm 64% 47° 18% 0
10 PM Mostly Clear 57° 57° 1% 0.00 in Calm 69% 47° 14% 0
11 PM Mostly Clear 55° 55° 1% 0.00 in Calm 74% 47° 9% 0
Thursday, October 2224 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 54° 54° 1% 0.00 in Calm 74% 46° 8% 0
1 AM Mostly Clear 53° 53° 1% 0.00 in Calm 74% 45° 7% 0
2 AM Clear 52° 52° 1% 0.00 in Calm 77% 45° 5% 0
3 AM Clear 51° 51° 1% 0.00 in Calm 80% 45° 4% 0
4 AM Mostly Clear 50° 50° 1% 0.00 in Calm 83% 45° 9% 0
5 AM Mostly Clear 50° 50° 1% 0.00 in Calm 83% 45° 11% 0
6 AM Sunny 49° 49° 1% 0.00 in Calm 83% 44° 9% 0
7 AM Sunny 48° 48° 0% 0.00 in Calm 86% 44° 8% 0
8 AM Sunny 50° 50° 0% 0.00 in Calm 83% 45° 4% 0
9 AM Sunny 55° 55° 0% 0.00 in Calm 74% 47° 3% 1
10 AM Sunny 63° 63° 0% 0.00 in Calm 58% 48° 3% 2
11 AM Sunny 68° 68° 0% 0.00 in Calm 49% 48° 1% 4
12 PM Sunny 72° 72° 0% 0.00 in Calm 43% 48° 2% 5
1 PM Sunny 75° 75° 0% 0.00 in NE 1 38% 48° 1% 5
2 PM Sunny 75° 75° 0% 0.00 in NE 1 38% 48° 1% 4
3 PM Sunny 76° 76° 0% 0.00 in N 1 37% 48° 2% 3
4 PM Sunny 77° 77° 0% 0.00 in NE 1 35% 47° 2% 1
5 PM Sunny 75° 75° 0% 0.00 in NE 1 38% 48° 2% 0
6 PM Clear 72° 72° 0% 0.00 in NE 1 43% 48° 2% 0
7 PM Clear 67° 67° 0% 0.00 in NE 1 50% 48° 2% 0
8 PM Clear 61° 61° 0% 0.00 in E 1 65% 49° 0% 0
9 PM Clear 59° 59° 0% 0.00 in E 1 69% 49° 1% 0
10 PM Clear 57° 57° 0% 0.00 in E 1 75% 49° 1% 0
11 PM Clear 56° 56° 0% 0.00 in E 1 74% 48° 1% 0
Friday, October 2324 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Clear 54° 54° 0% 0.00 in E 1 77% 47° 2% 0
1 AM Clear 53° 53° 0% 0.00 in E 1 83% 48° 2% 0
2 AM Clear 52° 52° 0% 0.00 in E 1 83% 47° 2% 0
3 AM Clear 51° 51° 0% 0.00 in E 2 86% 47° 2% 0
4 AM Clear 50° 50° 0% 0.00 in E 2 86% 46° 2% 0
5 AM Clear 50° 50° 0% 0.00 in E 2 83% 45° 3% 0
6 AM Sunny 49° 49° 0% 0.00 in SE 2 86% 45° 3% 0
7 AM Sunny 48° 48° 0% 0.00 in SE 2 89% 45° 4% 0
8 AM Sunny 53° 53° 0% 0.00 in SE 3 77% 46° 4% 0
9 AM Sunny 57° 57° 0% 0.00 in SE 3 69% 47° 4% 1
10 AM Sunny 62° 62° 0% 0.00 in SE 5 60% 48° 4% 2
11 AM Sunny 65° 65° 0% 0.00 in SE 6 54% 48° 3% 3
12 PM Sunny 69° 69° 0% 0.00 in SE 7 47% 48° 3% 4
1 PM Sunny 72° 72° 0% 0.00 in SE 7 41% 47° 2% 5
2 PM Sunny 73° 73° 0% 0.00 in SE 7 38% 46° 3% 4
3 PM Sunny 74° 74° 0% 0.00 in SE 6 37% 46° 4% 2
4 PM Sunny 75° 75° 0% 0.00 in SE 6 36% 46° 5% 1
5 PM Sunny 72° 72° 0% 0.00 in SE 6 41% 47° 5% 0
6 PM Mostly Clear 70° 70° 0% 0.00 in SE 6 44% 47° 6% 0
7 PM Mostly Clear 66° 66° 0% 0.00 in SE 6 52% 48° 6% 0
8 PM Mostly Clear 63° 63° 0% 0.00 in SE 6 58% 48° 8% –
9 PM Mostly Clear 60° 60° 0% 0.00 in SE 5 64% 48° 10% –
10 PM Mostly Clear 57° 57° 0% 0.00 in SE 5 69% 47° 12% –
11 PM Mostly Clear 55° 55° 0% 0.00 in SE 5 72% 46° 15% –
Saturday, October 2424 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Clear 54° 54° 0% 0.00 in SE 3 74% 46° 17% –
1 AM Mostly Clear 53° 53° 0% 0.00 in SE 3 74% 45° 20% –
2 AM Mostly Clear 52° 52° 0% 0.00 in SE 3 77% 45° 21% –
3 AM Mostly Clear 51° 51° 0% 0.00 in SE 3 77% 44° 23% –
4 AM Mostly Clear 50° 49° 0% 0.00 in SE 3 80% 44° 24% –
5 AM Mostly Clear 49° 48° 0% 0.00 in SE 3 80% 43° 24% –
6 AM Sunny 48° 47° 0% 0.00 in SE 3 83% 43° 25% –
7 AM Sunny 48° 47° 0% 0.00 in SE 3 83% 43° 25% –
8 AM Mostly Sunny 51° 51° 0% 0.00 in SE 5 77% 44° 26% –
9 AM Mostly Sunny 55° 55° 0% 0.00 in SE 5 69% 45° 27% –
10 AM Mostly Sunny 60° 60° 0% 0.00 in SE 6 60% 46° 28% –
11 AM Mostly Sunny 65° 65° 0% 0.00 in SE 7 52% 47° 30% –
12 PM Mostly Sunny 69° 69° 0% 0.00 in S 7 45% 47° 32% –
1 PM Mostly Sunny 73° 73° 0% 0.00 in S 7 40% 47° 34% –
2 PM Mostly Sunny 75° 75° 0% 0.00 in S 7 36% 46° 38% –
3 PM Mostly Sunny 76° 76° 0% 0.00 in SE 6 34% 46° 43% –
4 PM Mostly Sunny 76° 76° 0% 0.00 in SE 6 33% 45° 47% –
5 PM Mostly Sunny 74° 74° 0% 0.00 in SE 6 35% 45° 48% –
6 PM Partly Cloudy 71° 71° 0% 0.00 in SE 5 41% 46° 49% –
7 PM Partly Cloudy 67° 67° 0% 0.00 in SE 5 49% 47° 50% –
8 PM Partly Cloudy 64° 64° 0% 0.00 in SE 5 54% 47° 50% –
9 PM Partly Cloudy 61° 61° 0% 0.00 in SE 3 62% 48° 50% –
10 PM Partly Cloudy 59° 59° 0% 0.00 in SE 3 67% 48° 50% –
11 PM Partly Cloudy 57° 57° 0% 0.00 in SE 3 72% 48° 50% –
Sunday, October 2524 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Partly Cloudy 56° 56° 0% 0.00 in S 2 72% 47° 50% –
1 AM Mostly Cloudy 55° 55° 0% 0.00 in S 2 74% 47° 56% –
2 AM Mostly Cloudy 54° 54° 0% 0.00 in S 2 77% 47° 56% –
3 AM Mostly Cloudy 53° 53° 0% 0.00 in S 2 77% 46° 56% –
4 AM Mostly Cloudy 52° 52° 0% 0.00 in S 2 80% 46° 56% –
5 AM Mostly Cloudy 51° 51° 0% 0.00 in S 2 80% 45° 56% –
6 AM Partly Sunny 50° 50° 0% 0.00 in S 2 80% 44° 56% –
7 AM Mostly Sunny 51° 51° 0% 0.00 in S 2 77% 44° 50% –
8 AM Mostly Sunny 54° 54° 0% 0.00 in S 3 71% 45° 50% –
9 AM Mostly Sunny 58° 58° 0% 0.00 in S 3 67% 47° 50% –
10 AM Mostly Sunny 63° 63° 0% 0.00 in S 5 58% 48° 50% –
11 AM Mostly Sunny 67° 67° 0% 0.00 in S 6 50% 48° 50% –
12 PM Mostly Sunny 72° 72° 0% 0.00 in S 6 43% 48° 50% –
1 PM Mostly Sunny 75° 75° 0% 0.00 in S 6 38% 48° 39% –
2 PM Mostly Sunny 77° 77° 0% 0.00 in S 6 35% 47° 39% –
3 PM Mostly Sunny 79° 79° 0% 0.00 in S 5 31% 46° 39% –
4 PM Mostly Sunny 78° 78° 0% 0.00 in S 3 32% 46° 39% –
5 PM Mostly Sunny 76° 76° 0% 0.00 in S 3 36% 47° 39% –
6 PM Partly Cloudy 72° 72° 0% 0.00 in S 2 43% 48° 39% –
7 PM Mostly Cloudy 68° 68° 0% 0.00 in SE 2 51% 49° 52% –
8 PM Mostly Cloudy 65° 65° 0% 0.00 in S 2 56% 49° 52% –
9 PM Mostly Cloudy 62° 62° 0% 0.00 in S 2 62% 49° 52% –
10 PM Mostly Cloudy 60° 60° 0% 0.00 in S 2 67% 49° 52% –
11 PM Mostly Cloudy 58° 58° 0% 0.00 in S 2 72% 49° 52% –
Monday, October 2624 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Mostly Cloudy 57° 57° 0% 0.00 in S 1 72% 48° 52% –
1 AM Mostly Cloudy 56° 56° 0% 0.00 in S 1 74% 48° 53% –
2 AM Mostly Cloudy 55° 55° 0% 0.00 in S 1 77% 48° 53% –
3 AM Mostly Cloudy 54° 54° 0% 0.00 in S 1 77% 47° 53% –
4 AM Mostly Cloudy 53° 53° 0% 0.00 in S 1 80% 47° 53% –
5 AM Mostly Cloudy 52° 52° 0% 0.00 in S 1 80% 46° 53% –
6 AM Partly Sunny 51° 51° 0% 0.00 in S 1 80% 45° 53% –
7 AM Partly Sunny 52° 52° 2% 0.00 in S 1 77% 45° 59% –
8 AM Partly Sunny 54° 54° 2% 0.00 in S 1 74% 46° 59% –
9 AM Partly Sunny 58° 58° 2% 0.00 in SW 2 67% 47° 59% –
10 AM Partly Sunny 62° 62° 2% 0.00 in SW 2 60% 48° 59% –
11 AM Partly Sunny 66° 66° 2% 0.00 in SW 3 52% 48° 59% –
12 PM Partly Sunny 69° 69° 2% 0.00 in SW 3 47% 48° 59% –
1 PM Partly Sunny 72° 72° 2% 0.00 in SW 5 43% 48° 56% –
2 PM Partly Sunny 74° 74° 2% 0.00 in SW 5 40% 48° 56% –
3 PM Partly Sunny 75° 75° 2% 0.00 in SW 5 37% 47° 56% –
4 PM Partly Sunny 74° 74° 2% 0.00 in SW 5 38% 47° 56% –
5 PM Partly Sunny 72° 72° 2% 0.00 in S 5 43% 48° 56% –
6 PM Mostly Cloudy 69° 69° 2% 0.00 in SE 3 49% 49° 56% –
7 PM Partly Cloudy 66° 66° 1% 0.00 in E 3 56% 50° 50% –
8 PM Partly Cloudy 63° 63° 1% 0.00 in E 3 62% 50° 50% –
9 PM Partly Cloudy 60° 60° 1% 0.00 in NE 2 69% 50° 50% –
10 PM Partly Cloudy 58° 58° 1% 0.00 in N 2 75% 50° 50% –
11 PM Partly Cloudy 57° 57° 1% 0.00 in N 2 75% 49° 50% –
Tuesday, October 2717 hours
Time Conditions Temp Feels Precip Amount Wind Humidity Dew point Clouds UV
12 AM Partly Cloudy 56° 56° 1% 0.00 in N 2 77% 49° 50% –
1 AM Mostly Cloudy 55° 55° 2% 0.00 in N 2 77% 48° 61% –
2 AM Mostly Cloudy 54° 54° 2% 0.00 in N 2 80% 48° 61% –
3 AM Mostly Cloudy 53° 53° 2% 0.00 in N 2 80% 47° 61% –
4 AM Mostly Cloudy 52° 52° 2% 0.00 in N 2 83% 47° 61% –
5 AM Mostly Cloudy 51° 51° 2% 0.00 in N 2 86% 47° 61% –
6 AM Partly Sunny 51° 51° 2% 0.00 in N 3 83% 46° 61% –
7 AM Slight Chance Rain Showers 51° 51° 17% <0.01 in N 3 83% 46° 66% –
8 AM Slight Chance Rain Showers 53° 53° 17% <0.01 in N 3 80% 47° 66% –
9 AM Slight Chance Rain Showers 55° 55° 17% <0.01 in N 5 74% 47° 66% –
10 AM Slight Chance Rain Showers 58° 58° 17% <0.01 in N 5 69% 48° 66% –
11 AM Slight Chance Rain Showers 61° 61° 17% <0.01 in N 5 62% 48° 66% –
12 PM Slight Chance Rain Showers 63° 63° 17% <0.01 in NE 5 56% 47° 66% –
1 PM Slight Chance Rain Showers 65° 65° 15% <0.01 in NE 5 52% 47° 51% –
2 PM Slight Chance Rain Showers 66° 66° 15% <0.01 in NE 5 50% 47° 51% –
3 PM Slight Chance Rain Showers 66° 66° 15% <0.01 in N 6 48% 46° 51% –
4 PM Slight Chance Rain Showers 66° 66° 15% <0.01 in N 6 48% 46° 51% –

National Weather Service forecast updated 1 hr 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.