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Annapolis, IL Climate

1991 to 2020 normals at Robinson, 9.5 mi from the center of Annapolis, elevation 535 ft.

Average weather by month

Select a month for daily normals and last year's weather

MonthRangeHighLowPrecip.Snow
January37°20°3.11 in--
February42°23°2.41 in--
March53°33°3.64 in--
April66°43°5.17 in--
May76°54°4.67 in--
June85°63°4.57 in--
July87°66°4.17 in--
August86°63°3.45 in--
September81°56°3.66 in--
October68°44°3.70 in--
November54°34°3.78 in--
December42°25°3.15 in--
Year65°45.48 in--

Frequently asked questions

What is the hottest month in Annapolis, IL?
July is the warmest month, with a normal high of 87°F at Robinson.
What is the coldest month in Annapolis, IL?
January is the coldest month, with a normal low of 20°F.
What is the wettest month in Annapolis, IL?
April has the most precipitation on average, about 5.17 inches.