Click on a day for an hourly weather forecast
The temperatures in Rexburg in August are comfortable with low of 11°C and and high up to 29°C.
You can expect about 3 to 8 days of rain in Rexburg during the month of August. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
Our weather forecast can give you a great sense of what weather to expect in Rexburg in August 2025.
If you’re planning to visit Rexburg in the near future, we highly recommend that you review the 14 day weather forecast for Rexburg before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -3° / -11° | 6 | 5 | 21 | 62 mm | Awful | Rexburg in January |
| February | -1° / -10° | 9 | 2 | 22 | 51 mm | Awful | Rexburg in February |
| March | 5° / -4° | 8 | 9 | 15 | 58 mm | Awful | Rexburg in March |
| April | 11° / 0° | 9 | 14 | 8 | 72 mm | Awful | Rexburg in April |
| May | 18° / 4° | 8 | 21 | 2 | 75 mm | Bad | Rexburg in May |
| June | 24° / 7° | 5 | 24 | 0 | 58 mm | Perfect | Rexburg in June |
| July | 30° / 11° | 2 | 29 | 0 | 25 mm | Good | Rexburg in July |
| August | 29° / 11° | 3 | 28 | 0 | 38 mm | Good | Rexburg in August |
| September | 24° / 8° | 3 | 27 | 0 | 50 mm | Perfect | Rexburg in September |
| October | 13° / 2° | 5 | 22 | 3 | 55 mm | Bad | Rexburg in October |
| November | 5° / -4° | 6 | 12 | 12 | 37 mm | Awful | Rexburg in November |
| December | -3° / -10° | 7 | 4 | 21 | 55 mm | Awful | Rexburg in December |