Click on a day for an hourly weather forecast
The weather in Gillette in July is hot. The average temperatures are between 17°C and 30°C. Usually the days in July are hot while the nights are a bit cooler.
You can expect rain for roughly half of the month of July in Gillette. 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 Gillette in July 2025.
If you’re planning to visit Gillette in the near future, we highly recommend that you review the 14 day weather forecast for Gillette before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 0° / -8° | 7 | 21 | 3 | 17 mm | Awful | Gillette in January |
| February | 0° / -9° | 8 | 17 | 3 | 21 mm | Awful | Gillette in February |
| March | 8° / -3° | 5 | 22 | 3 | 34 mm | Bad | Gillette in March |
| April | 11° / 1° | 9 | 18 | 3 | 64 mm | Awful | Gillette in April |
| May | 18° / 7° | 11 | 20 | 0 | 98 mm | Ok | Gillette in May |
| June | 25° / 13° | 9 | 21 | 0 | 75 mm | Good | Gillette in June |
| July | 30° / 17° | 8 | 23 | 0 | 45 mm | Good | Gillette in July |
| August | 29° / 17° | 6 | 25 | 0 | 51 mm | Good | Gillette in August |
| September | 24° / 12° | 4 | 26 | 0 | 43 mm | Perfect | Gillette in September |
| October | 14° / 4° | 5 | 24 | 2 | 49 mm | Ok | Gillette in October |
| November | 7° / -2° | 5 | 23 | 2 | 19 mm | Bad | Gillette in November |
| December | 0° / -8° | 6 | 22 | 3 | 20 mm | Awful | Gillette in December |