Alton, IN Weather
Alton, IN climate is warm during summer when temperatures tend to be in the 70's and very cold during winter when temperatures tend to be in the 30's.
The warmest month of the year is July with an average maximum temperature of 88.30 degrees Fahrenheit, while the coldest month of the year is January with an average minimum temperature of 21.10 degrees Fahrenheit.
Temperature variations between night and day tend to be moderate during summer with a difference that can reach 26 degrees Fahrenheit, and moderate during winter with an average difference of 22 degrees Fahrenheit.
The annual average precipitation at Alton is 49.72 Inches. Rainfall in is fairly evenly distributed throughout the year. The wettest month of the year is May with an average rainfall of 5.06 Inches.
Weather Data
Current Conditions
|
Fair, 56°F | Humidity: 55% | Dewpoint: 40°F |
| Wind Speed: SE 3.5 MPH (3 KT) | Heat Index: 56°F | ||
| Barometer: 30.06 in. | Wind Chill: 56°F |
Weather Forecast
 | Hi: 59°F | Today: Mostly sunny. Highs in the upper 50s. East winds 5 to 10 mph. |
| Lo: 41°F | ||
 | Hi: 55°F | Monday: Mostly cloudy. Slight chance of showers until midday... Then chance of showers in the afternoon. Highs in the mid 50s. South winds up to 5 mph. Chance of showers 30 percent. |
| Lo: 45°F | ||
| Hi: 59°F | Tuesday: Partly sunny with a 30 percent chance of showers. Highs in the upper 50s. South winds 5 to 10 mph. |
| Lo: 40°F | ||
| Hi: 51°F | Wednesday: Partly sunny with a 20 percent chance of showers. Highs in the lower 50s. |
| Lo: 39°F | ||
| Hi: 39°F | Thanksgiving day: Mostly cloudy with a 30 percent chance of showers. Near steady temperature in the upper 30s. |
| Lo: 31°F | ||
| Hi: 45°F | Friday: Mostly sunny. Highs in the mid 40s. |
| Lo: 31°F |
Moon, Sunrise and Sunset
 |
Moon Phase: Waxing Crescent Moon | Civil Twilight: 7:04 AM EST |
Sunrise: 7:33 AM EST |
| Sunset: 5:29 PM EST |
Civil Twilight: 5:58 PM EST |
Normal Climate
Normal Temperatures
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max °F | 41.3 | 48.3 | 58.7 | 68.9 | 77.4 | 84.8 | 88.3 | 87.1 | 80.9 | 70.4 | 57.1 | 45.6 | 67.4 |
| Mean °F | 31.2 | 36.3 | 45.6 | 54.8 | 63.4 | 71.7 | 75.8 | 74.1 | 67.1 | 55.6 | 45.5 | 35.5 | 54.7 |
| Min °F | 21.1 | 24.3 | 32.5 | 40.6 | 49.4 | 58.5 | 63.2 | 61.1 | 53.2 | 40.7 | 33.8 | 25.3 | 42.0 |
Normal Precipitation
| Month | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | Annual |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Inch | 3.68 | 3.50 | 4.79 | 4.73 | 5.06 | 4.80 | 4.24 | 3.89 | 3.56 | 3.13 | 4.35 | 3.99 | 49.72 |
