Click on a day for an hourly weather forecast
The temperatures in Fort Smith in May are comfortable with low of 14°C and and high up to 26°C.
You can expect rain for roughly half of the month of May in Fort Smith. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Fort Smith in May 2026.
If you’re planning to visit Fort Smith in the near future, we highly recommend that you review the 14 day weather forecast for Fort Smith before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 9° / 0° | 4 | 25 | 2 | 72 mm | Bad | Fort Smith in January |
| February | 11° / 1° | 4 | 21 | 3 | 71 mm | Bad | Fort Smith in February |
| March | 17° / 6° | 6 | 24 | 1 | 113 mm | Good | Fort Smith in March |
| April | 21° / 10° | 7 | 23 | 0 | 147 mm | Ok | Fort Smith in April |
| May | 26° / 14° | 8 | 23 | 0 | 186 mm | Good | Fort Smith in May |
| June | 32° / 19° | 7 | 23 | 0 | 99 mm | Ok | Fort Smith in June |
| July | 35° / 21° | 7 | 24 | 0 | 106 mm | Bad | Fort Smith in July |
| August | 34° / 20° | 7 | 24 | 0 | 122 mm | Bad | Fort Smith in August |
| September | 30° / 17° | 5 | 25 | 0 | 101 mm | Good | Fort Smith in September |
| October | 23° / 11° | 5 | 26 | 0 | 115 mm | Perfect | Fort Smith in October |
| November | 16° / 6° | 4 | 26 | 0 | 87 mm | Good | Fort Smith in November |
| December | 11° / 2° | 4 | 25 | 1 | 103 mm | Ok | Fort Smith in December |