Humid subtropical climate
Climate Anna - Illinois
Annual high68ºF
Annual low45ºF
Precipitation50.38 inch
| Month | HighºF | LowºF | Precipinch | Snowinch |
|---|---|---|---|---|
| Jan | 44 | 23 | 3.71 | 4 |
| Feb | 49 | 27 | 3.50 | 4 |
| Mar | 60 | 35 | 4.63 | 1 |
| Apr | 70 | 44 | 4.67 | 0 |
| May | 78 | 53 | 6.01 | 0 |
| Jun | 86 | 62 | 4.40 | 0 |
| Jul | 89 | 66 | 3.32 | 0 |
| Aug | 89 | 65 | 3.23 | 0 |
| Sep | 82 | 56 | 3.33 | 0 |
| Oct | 71 | 45 | 4.22 | 0 |
| Nov | 58 | 36 | 4.85 | 0 |
| Dec | 46 | 26 | 4.51 | 3 |
- JanHigh 44ºFLow 23ºFPrecip 3.71 inch
- FebHigh 49ºFLow 27ºFPrecip 3.50 inch
- MarHigh 60ºFLow 35ºFPrecip 4.63 inch
- AprHigh 70ºFLow 44ºFPrecip 4.67 inch
- MayHigh 78ºFLow 53ºFPrecip 6.01 inch
- JunHigh 86ºFLow 62ºFPrecip 4.40 inch
- JulHigh 89ºFLow 66ºFPrecip 3.32 inch
- AugHigh 89ºFLow 65ºFPrecip 3.23 inch
- SepHigh 82ºFLow 56ºFPrecip 3.33 inch
- OctHigh 71ºFLow 45ºFPrecip 4.22 inch
- NovHigh 58ºFLow 36ºFPrecip 4.85 inch
- DecHigh 46ºFLow 26ºFPrecip 4.51 inch
Climate summary
What is the average weather in Anna, Illinois?
Anna, Illinois, has a humid subtropical climate with very strong seasonal temperature contrasts. Summers are hot, and winters are cold, bringing regular snowfall. The area is wet overall, with rainfall spread fairly evenly throughout the year, though spring is the wettest season. Heavy seasonal downpours can occur during warmer months.
Anna weather averages
Annual high68ºF
Annual low45ºF
Precipitation50.38 inch
Snowfall12 inch
Daily normals Anna - Illinois - January
| Day | HighºF | LowºF | Prec/ | Prec/ | Snow/ | Snow/ |
|---|---|---|---|---|---|---|
| Jan 1 | 45.2 | 26.7 | 0.11 | 0.11 | 0.10 | 0.10 |
| Jan 2 | 45.1 | 26.5 | 0.23 | 0.23 | 0.10 | 0.10 |
| Jan 3 | 45.0 | 26.3 | 0.34 | 0.34 | 0.20 | 0.20 |
| Jan 4 | 45.0 | 26.2 | 0.45 | 0.45 | 0.30 | 0.30 |
| Jan 5 | 44.9 | 26.0 | 0.57 | 0.57 | 0.40 | 0.40 |
| Jan 6 | 44.9 | 25.9 | 0.68 | 0.68 | 0.50 | 0.50 |
| Jan 7 | 44.8 | 25.7 | 0.79 | 0.79 | 0.60 | 0.60 |
| Jan 8 | 44.8 | 25.6 | 0.90 | 0.90 | 0.60 | 0.60 |
| Jan 9 | 44.8 | 25.5 | 1.02 | 1.02 | 0.70 | 0.70 |
| Jan 10 | 44.8 | 25.4 | 1.14 | 1.14 | 0.80 | 0.80 |
| Jan 11 | 44.8 | 25.3 | 1.26 | 1.26 | 0.80 | 0.80 |
| Jan 12 | 44.8 | 25.2 | 1.38 | 1.38 | 0.90 | 0.90 |
| Jan 13 | 44.8 | 25.1 | 1.50 | 1.50 | 1.00 | 1.00 |
| Jan 14 | 44.8 | 25.0 | 1.62 | 1.62 | 1.00 | 1.00 |
| Jan 15 | 44.8 | 25.0 | 1.74 | 1.74 | 1.10 | 1.10 |
| Jan 16 | 44.9 | 24.9 | 1.86 | 1.86 | 1.20 | 1.20 |
| Jan 17 | 44.9 | 24.9 | 1.98 | 1.98 | 1.30 | 1.30 |
| Jan 18 | 45.0 | 24.9 | 2.10 | 2.10 | 1.40 | 1.40 |
| Jan 19 | 45.0 | 24.9 | 2.21 | 2.21 | 1.50 | 1.50 |
| Jan 20 | 45.1 | 24.9 | 2.33 | 2.33 | 1.50 | 1.50 |
| Jan 21 | 45.2 | 24.9 | 2.44 | 2.44 | 1.60 | 1.60 |
| Jan 22 | 45.3 | 24.9 | 2.55 | 2.55 | 1.70 | 1.70 |
| Jan 23 | 45.3 | 25.0 | 2.67 | 2.67 | 1.80 | 1.80 |
| Jan 24 | 45.5 | 25.0 | 2.78 | 2.78 | 1.90 | 1.90 |
| Jan 25 | 45.6 | 25.1 | 2.89 | 2.89 | 2.00 | 2.00 |
| Jan 26 | 45.7 | 25.2 | 3.00 | 3.00 | 2.10 | 2.10 |
| Jan 27 | 45.8 | 25.3 | 3.10 | 3.10 | 2.20 | 2.20 |
| Jan 28 | 45.9 | 25.4 | 3.21 | 3.21 | 2.30 | 2.30 |
| Jan 29 | 46.1 | 25.5 | 3.31 | 3.31 | 2.40 | 2.40 |
| Jan 30 | 46.2 | 25.6 | 3.42 | 3.42 | 2.50 | 2.50 |
| Jan 31 | 46.4 | 25.8 | 3.53 | 3.53 | 2.60 | 2.60 |
Precipitation and snow add up through the month (/mo) and the year (/yr)
Weather history Anna - October 2026
| Day | HighºF | LowºF | Precip.inch |
|---|---|---|---|
| Oct 1 | 88.0 | 57.9 | 0.00 |
| Oct 2 | 89.1 | 64.9 | 0.86 |
| Oct 3 | 69.1 | 53.1 | 0.30 |
| Oct 4 | 72.0 | 53.1 | 0.00 |
| Oct 5 | – | – | – |
| Oct 6 | – | – | – |
| Oct 7 | – | – | – |
| Oct 8 | 82.9 | 46.0 | 0.00 |
| Oct 9 | 84.0 | 50.0 | 0.00 |
| Oct 10 | 87.1 | 50.0 | 0.00 |
| Oct 11 | 72.0 | 54.0 | 0.00 |
| Oct 12 | 82.9 | 54.0 | 0.00 |
| Oct 13 | 87.1 | 55.9 | 0.00 |
| Oct 14 | 88.0 | 55.9 | 0.00 |
| Oct 15 | 78.1 | 70.0 | 0.41 |
| Oct 16 | 86.0 | 53.1 | 0.10 |
| Oct 17 | 57.0 | 44.1 | – |
| Oct 18 | – | – | 0.00 |
| Oct 19 | 66.0 | 36.0 | – |
| Oct 20 | – | – | – |
| Oct 21 | – | – | – |
| Oct 22 | 73.0 | 43.0 | 0.00 |
| Oct 23 | 75.0 | 46.0 | 0.00 |
| Oct 24 | 73.9 | 44.1 | 0.00 |
| Oct 25 | 75.0 | 45.0 | 0.00 |
| Oct 26 | 77.0 | 45.0 | 0.00 |
| Oct 27 | 75.0 | 45.0 | 0.00 |
| Oct 28 | 73.9 | 45.0 | 0.00 |
| Oct 29 | 78.1 | 45.0 | 0.00 |
| Oct 30 | 80.1 | 46.9 | 0.00 |
| Oct 31 | – | – | – |
The data for October 2026 is incomplete: some days or values are missing.
- –No data
- –Not yet observed or received
- TTrace, too small to measure
Observed extremes
- Highest max temperature89.1ºF · Oct 2
- Lowest max temperature57.0ºF · Oct 17
- Highest min temperature70.0ºF · Oct 15
- Lowest min temperature36.0ºF · Oct 19
Geo Anna - Illinois
Location
- Country
- United States
- State
- Illinois
- County
- Union
- City
- Anna
- Zip Code
- 62906
- Elevation
- 627 ft
- Longitude
- -89.25
- Latitude
- 37.46
- ICAO
- –
- IATA
- –