Dorchester, IL weather
Today, hourly and 7-day forecast, sunrise and sunset, and the normal climate month by month
Weather in Dorchester now
Loading the National Weather Service forecast…
Dorchester weather by the hour
Dorchester weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Dorchester.
This week in Dorchester
Sunrise, sunset and moon in Dorchester
What is the weather usually like in Dorchester?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 86°F average high
- Januarycoldest month · 19°F average low
- 40.0 inprecipitation per year · 1,016 mm
- 16.5 insnowfall per year · 42 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Dorchester: May–June and August–September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station CARLINVILLE, IL US (USC00111280), adjusted for the elevation of Dorchester.
Dorchester weather month by month
Sunrise and sunset in Dorchester through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:15 AM | 5:02 PM | 9 h 47 min |
| February | 6:49 AM | 5:38 PM | 10 h 48 min |
| March | 7:08 AM | 7:07 PM | 11 h 58 min |
| April | 6:20 AM | 7:38 PM | 13 h 17 min |
| May | 5:44 AM | 8:07 PM | 14 h 22 min |
| June | 5:31 AM | 8:28 PM | 14 h 57 min |
| July | 5:44 AM | 8:26 PM | 14 h 41 min |
| August | 6:11 AM | 7:56 PM | 13 h 44 min |
| September | 6:39 AM | 7:09 PM | 12 h 29 min |
| October | 7:08 AM | 6:22 PM | 11 h 14 min |
| November | 6:41 AM | 4:46 PM | 10 h 5 min |
| December | 7:10 AM | 4:39 PM | 9 h 29 min |
Times for the 15th of each month, local time (America/Chicago).
What is the weather like in Dorchester?
Dorchester has a hot-summer humid continental climate. The warmest month is July, with an average high of 86°F (30°C), and the coldest is January, with average lows of 19°F (-7°C).
It gets about 40.0 inches (1,016 mm) of precipitation a year. The wettest month is April and the driest is February. Snow is common: about 17 inches fall in an average year.
The best time to visit Dorchester is May–June and August–September. At 659 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 Dorchester
Weather in towns near Dorchester
Questions about the weather in Dorchester
What is the hottest month in Dorchester?
July, with an average high of 86°F (30°C).
What is the coldest month in Dorchester?
January, with an average low of 19°F (-7°C).
How much does it rain in Dorchester?
About 40.0 inches (1,016 mm) a year; the wettest month is April.
Does it snow in Dorchester?
Yes, about 17 inches of snow fall in an average year.
When is the best time to visit Dorchester?
May–June and August–September, when temperatures are most pleasant and rainy days are fewer.
What climate does Dorchester have?
Hot-summer humid continental (Köppen Dfa).
What is the weather like in Dorchester in November?
Highs average 53°F and lows 33°F, with about 3.5 inches of precipitation.
What time is sunrise in Dorchester?
Around 6:41 AM in mid-November, and sunset around 4:46 PM. Today’s exact times are shown above.
Where does this Dorchester weather forecast come from?
From the National Weather Service (NOAA), the official U.S. weather agency, for the exact coordinates of Dorchester.
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