Climate averages 1991–2020
Fort Smith weather
in December.
A cool, wet month: the 11th warmest and the 7th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Fort Smith: daytime highs average 10.7°C and nights cool to about 1.6°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 96 mm of rain on roughly 9 days, which makes December a wet month (the 7th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 49 min on an average December day.
The nearest other city in this atlas is Fayetteville, United States (78 km away). In December its highs average 8.4°C, 2.3°C cooler than Fort Smith, with 76 mm of rain.
Among the 498 cities listed in the United States, Fort Smith ranks 256th of 498 for the warmest December highs and joint 360th of 498 for the driest December (rainfall, lowest first). The mean December high of those 498 cities is 10.5°C; Fort Smith is 0.1°C warmer than that mean.
From December to January, average highs fall by 1.2°C to 9.5°C, and monthly rainfall falls from 96 mm to 84 mm.
The annual picture
December in context
Monthly rainfall
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
Fort Smith climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 9.5°C-0.1°C | -0.1°C | 84 | 8.9 | 10.110 h |
| February | 12.3°C1.8°C | 1.8°C | 85 | 8.5 | 10.911 h |
| March | 17.0°C6.0°C | 6.0°C | 125 | 11.3 | 11.912 h |
| April | 21.6°C10.7°C | 10.7°C | 149 | 11.3 | 13.113 h |
| May | 25.9°C16.0°C | 16.0°C | 148 | 12.9 | 14.014 h |
| June | 30.5°C20.8°C | 20.8°C | 92 | 10.3 | 14.515 h |
| July | 33.0°C23.1°C | 23.1°C | 78 | 8.8 | 14.314 h |
| August | 32.8°C22.7°C | 22.7°C | 63 | 8.3 | 13.513 h |
| September | 28.9°C18.6°C | 18.6°C | 93 | 7.4 | 12.412 h |
| October | 22.7°C12.4°C | 12.4°C | 108 | 9.0 | 11.311 h |
| November | 15.9°C6.2°C | 6.2°C | 110 | 8.7 | 10.310 h |
| December, selected | 10.7°C1.6°C | 1.6°C | 96 | 8.9 | 9.810 h |
Rainfall is the average of the 30 separate monthly totals. A rain 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
December in nearby cities
- Fayetteville, United States in DecemberUnited States · 78 kmHigh 8.4°C · Low 0.3°C · 76 mm rain
- Springdale in DecemberUnited States · 92 kmHigh 8.5°C · Low 0.4°C · 70 mm rain
- Broken Arrow in DecemberUnited States · 146 kmHigh 9.4°C · Low 1.0°C · 64 mm rain
- Tulsa in DecemberUnited States · 167 kmHigh 9.3°C · Low 1.0°C · 57 mm rain
- Little Rock in DecemberUnited States · 205 kmHigh 11.3°C · Low 2.9°C · 116 mm rain
- Springfield (Missouri), United States in DecemberUnited States · 226 kmHigh 7.2°C · Low -1.1°C · 68 mm rain
- Norman in DecemberUnited States · 277 kmHigh 10.0°C · Low 1.5°C · 48 mm rain
- Edmond in DecemberUnited States · 280 kmHigh 9.5°C · Low 0.6°C · 43 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 Fort Smith) is explained once on the Fort Smith year overview and on the Sources, method and limits page.