Climate averages 1991–2020
Decatur weather
in November.
A cool, moderately wet month: the 9th warmest and the joint 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
November is a cool month in Decatur: daytime highs average 10.5°C and nights cool to about 2.3°C. By daytime temperature it is the 9th warmest of the 12 months.
Expect about 88 mm of rain on roughly 9 days, which makes November a moderately wet month (the joint 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 10 h 02 min on an average November day.
The nearest other city in this atlas is Springfield (Illinois), United States (59 km away). In November its highs average 10.7°C, about as warm as Decatur, with 84 mm of rain.
Among the 498 cities listed in the United States, Decatur ranks joint 352nd of 498 for the warmest November highs and joint 395th of 498 for the driest November (rainfall, lowest first). The mean November high of those 498 cities is 15.2°C; Decatur is 4.7°C cooler than that mean.
From November to December, average highs fall by 6.2°C to 4.3°C, and monthly rainfall falls from 88 mm to 63 mm.
The annual picture
November in context
Monthly precipitation
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Decatur climate table
| Month | Average highHigh / low | Average low | Precipitation mm/month | Wet days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 1.8°C-6.3°C | -6.3°C | 69 | 8.5 | 9.710 h |
| February | 4.6°C-4.7°C | -4.7°C | 59 | 7.6 | 10.711 h |
| March | 10.7°C0.7°C | 0.7°C | 83 | 9.7 | 11.912 h |
| April | 17.2°C6.7°C | 6.7°C | 118 | 11.7 | 13.213 h |
| May | 22.5°C12.8°C | 12.8°C | 122 | 13.2 | 14.414 h |
| June | 27.1°C17.9°C | 17.9°C | 110 | 10.9 | 14.915 h |
| July | 28.8°C19.9°C | 19.9°C | 91 | 10.3 | 14.715 h |
| August | 28.3°C19.3°C | 19.3°C | 77 | 8.4 | 13.714 h |
| September | 25.0°C15.4°C | 15.4°C | 82 | 7.3 | 12.512 h |
| October | 18.2°C9.1°C | 9.1°C | 88 | 8.6 | 11.211 h |
| November, selected | 10.5°C2.3°C | 2.3°C | 88 | 8.7 | 10.010 h |
| December | 4.3°C-3.1°C | -3.1°C | 63 | 8.7 | 9.49 h |
Precipitation (rain or snow, as water) is the average of the 30 separate monthly totals. A wet day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
November in nearby cities
- Springfield (Illinois), United States in NovemberUnited States · 59 kmHigh 10.7°C · Low 2.4°C · 84 mm rain
- Champaign in NovemberUnited States · 68 kmHigh 10.2°C · Low 1.9°C · 83 mm rain
- Bloomington (Illinois), United States in NovemberUnited States · 72 kmHigh 9.7°C · Low 1.6°C · 77 mm rain
- Peoria (Illinois), United States in NovemberUnited States · 109 kmHigh 9.7°C · Low 2.0°C · 71 mm rain
- St. Louis in NovemberUnited States · 172 kmHigh 12.3°C · Low 3.6°C · 93 mm rain
- Lafayette (Indiana), United States in NovemberUnited States · 188 kmHigh 10.0°C · Low 2.0°C · 78 mm rain
- O'Fallon in NovemberUnited States · 189 kmHigh 12.0°C · Low 3.7°C · 89 mm rain
- Joliet in NovemberUnited States · 201 kmHigh 9.1°C · Low 1.4°C · 69 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Decatur) is explained once on the Decatur year overview and on the Sources, method and limits page.