Effingham (IL)
December
Weather in Effingham, Illinois for December 2025
Your guide to Effingham weather in December - trends and predictions
In general, the average temperature in Effingham at the beginning of December is 1.3 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 9.6 °F by the end of December.
Effingham in December brings notable rainfall, with an average of 18 rainy days and a total precipitation of 168.7 mm.
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Temperatures
Rain 🌧️
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13
Dry days
18
Rainy days
0
Snow days
6°/-1°
Temperatures
23 km/h
Avg max wind
81 %
Avg humidity
Effingham Weather December
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Temperatures trend during December in Effingham
See the weather trend as well as the moving average line
December weather in Effingham day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Sunny | 0° /-7° | 0 mm | 2 | |
| Dec. 2 |  Light freezing rain | -1° /-7° | 0.8 mm | 1 | |
| Dec. 3 | Sunny | 0° /-7° | 0 mm | 2 | |
| Dec. 4 |  Overcast | 6° /-4° | 0 mm | 2 | |
| Dec. 5 | Sunny | -3° /-9° | 0 mm | 2 | |
| Dec. 6 |  Cloudy | 0° /-8° | 0 mm | 1 | |
| Dec. 7 | Sunny | 7° /-5° | 0 mm | 3 | |
| Dec. 8 | Overcast | 11° /1° | 4.8 mm | 3 | |
| Dec. 9 | Overcast | 10° /4° | 2.5 mm | 3 | |
| Dec. 10 | Overcast | 4° /0° | 0 mm | 1 | |
| Dec. 11 |  Patchy rain possible | 1° /-3° | 0.3 mm | 1 | |
| Dec. 12 | Overcast | 0° /-6° | 0 mm | 1 | |
| Dec. 13 | Overcast | 1° /-6° | 0 mm | 1 | |
| Dec. 14 |  Moderate or heavy rain shower | 5° /-1° | 38.4 mm | 1 | |
| Dec. 15 | Patchy rain possible | 9° /5° | 2.8 mm | 2 | |
| Dec. 16 | Moderate or heavy rain shower | 14° /4° | 22.3 mm | 3 | |
| Dec. 17 |  Partly cloudy | 11° /0° | 0.8 mm | 4 | |
| Dec. 18 | Overcast | 5° /-1° | 4.3 mm | 2 | |
| Dec. 19 | Overcast | 3° /-2° | 0.1 mm | 1 | |
| Dec. 20 | Light freezing rain | 2° /-2° | 0.3 mm | 1 | |
| Dec. 21 | Partly cloudy | 2° /-3° | 0 mm | 2 | |
| Dec. 22 | Partly cloudy | 5° /-3° | 0 mm | 3 | |
| Dec. 23 | Moderate rain at times | 5° /-1° | 1.1 mm | 2 | |
| Dec. 24 | Patchy rain possible | 6° /1° | 1 mm | 2 | |
| Dec. 25 | Moderate or heavy rain shower | 6° /3° | 8.7 mm | 2 | |
| Dec. 26 | Patchy rain possible | 9° /5° | 0.9 mm | 2 | |
| Dec. 27 | Moderate or heavy rain shower | 11° /7° | 22 mm | 3 | |
| Dec. 28 | Overcast | 13° /9° | 5.4 mm | 3 | |
| Dec. 29 | Moderate or heavy rain shower | 11° /7° | 41.3 mm | 3 | |
| Dec. 30 | Patchy rain possible | 9° /5° | 0.1 mm | 2 | |
| Dec. 31 | Moderate or heavy rain shower | 8° /1° | 10.7 mm | 2 | |
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Important Notice
Our weather forecast for Effingham in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Effingham forecast closer to your planned date for the most up-to-date weather information.
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Effingham in December - FAQ
What are the expected maximum and minimum temperatures in Effingham during December?
Prepare for cooler days with highs just around 6° and colder nights, dipping below -1°.
How much rainfall should be expected in Effingham during December?
Significant rainfall exceeding 168.7 mm is expected in Effingham during December, occurring over more than 18 days. Preparing for wet conditions is recommended in your planning.
Will it snow in Effingham in December 2025?
Effingham typically sees 0 cm of snowfall during December.
What are the typical wind conditions in Effingham during December?
The average wind speed in Effingham during December is 23 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Effingham
Explore the daily rainfall trends and prepare for Effinghams December weather 💧
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