Harristown, IL weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Harristown now
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Harristown weather by the hour
Harristown weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Harristown.
This week in Harristown
Sunrise, sunset and moon in Harristown
What is the weather usually like in Harristown?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 85°F average high
- Januarycoldest month · 20°F average low
- 40.4 inprecipitation per year · 1,027 mm
- 13.6 insnowfall per year · 35 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Harristown: May–June and August–September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station DECATUR WTP, IL US (USC00112193), adjusted for the elevation of Harristown.
Harristown weather month by month
Sunrise and sunset in Harristown through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:14 AM | 4:57 PM | 9 h 43 min |
| February | 6:46 AM | 5:33 PM | 10 h 46 min |
| March | 7:05 AM | 7:04 PM | 11 h 58 min |
| April | 6:16 AM | 7:35 PM | 13 h 19 min |
| May | 5:39 AM | 8:05 PM | 14 h 26 min |
| June | 5:25 AM | 8:27 PM | 15 h 2 min |
| July | 5:39 AM | 8:25 PM | 14 h 45 min |
| August | 6:07 AM | 7:54 PM | 13 h 47 min |
| September | 6:36 AM | 7:06 PM | 12 h 30 min |
| October | 7:05 AM | 6:18 PM | 11 h 12 min |
| November | 6:39 AM | 4:41 PM | 10 h 1 min |
| December | 7:09 AM | 4:33 PM | 9 h 24 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in Harristown?
Harristown has a hot-summer humid continental climate. The warmest month is July, with an average high of 85°F (29°C), and the coldest is January, with average lows of 20°F (-7°C).
It gets about 40.4 inches (1,027 mm) of precipitation a year. The wettest month is May and the driest is February. Snow is common: about 14 inches fall in an average year.
The best time to visit Harristown is May–June and August–September. At 673 ft of elevation, nights are mild most of the year. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
More about Harristown
Weather in towns near Harristown
Questions about the weather in Harristown
What is the hottest month in Harristown?
July, with an average high of 85°F (29°C).
What is the coldest month in Harristown?
January, with an average low of 20°F (-7°C).
How much does it rain in Harristown?
About 40.4 inches (1,027 mm) a year; the wettest month is May.
Does it snow in Harristown?
Yes, about 14 inches of snow fall in an average year.
When is the best time to visit Harristown?
May–June and August–September, when temperatures are most pleasant and rainy days are fewer.
What climate does Harristown have?
Hot-summer humid continental (Köppen Dfa).
What is the weather like in Harristown in November?
Highs average 50°F and lows 34°F, with about 3.2 inches of precipitation.
What time is sunrise in Harristown?
Around 6:39 AM in mid-November, and sunset around 4:41 PM. Today’s exact times are shown above.
Where does this Harristown weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Harristown.
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