Climate averages 1991–2020
Fort Smith weather
in May.
A warm, wet month: the 5th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
May is a warm month in Fort Smith: daytime highs average 25.9°C and nights cool to about 16.0°C. By daytime temperature it is the 5th warmest of the 12 months.
Expect about 148 mm of rain on roughly 13 days, which makes May a wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 00 min on an average May day.
The nearest other city in this atlas is Fayetteville, United States (78 km away). In May its highs average 23.8°C, 2.1°C cooler than Fort Smith, with 142 mm of rain.
Among the 498 cities listed in the United States, Fort Smith ranks joint 164th of 498 for the warmest May highs and joint 495th of 498 for the driest May (rainfall, lowest first). The mean May high of those 498 cities is 23.8°C; Fort Smith is 2.2°C warmer than that mean.
From May to June, average highs rise by 4.6°C to 30.5°C, and monthly rainfall falls from 148 mm to 92 mm.
The annual picture
May 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, selected | 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 | 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
May in nearby cities
- Fayetteville, United States in MayUnited States · 78 kmHigh 23.8°C · Low 14.8°C · 142 mm rain
- Springdale in MayUnited States · 92 kmHigh 23.9°C · Low 14.9°C · 133 mm rain
- Broken Arrow in MayUnited States · 146 kmHigh 25.4°C · Low 16.4°C · 150 mm rain
- Tulsa in MayUnited States · 167 kmHigh 25.6°C · Low 16.4°C · 148 mm rain
- Little Rock in MayUnited States · 205 kmHigh 26.6°C · Low 17.1°C · 138 mm rain
- Springfield (Missouri), United States in MayUnited States · 226 kmHigh 23.6°C · Low 14.0°C · 137 mm rain
- Norman in MayUnited States · 277 kmHigh 26.1°C · Low 16.6°C · 113 mm rain
- Edmond in MayUnited States · 280 kmHigh 26.2°C · Low 16.2°C · 112 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.