Click on a day for an hourly weather forecast
The temperatures in Riverton in May are quite cold with temperatures between 6°C and 20°C, warm clothes are a must.
You can expect rain for roughly half of the month of May in Riverton. 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 Riverton in May 2025.
If you’re planning to visit Riverton in the near future, we highly recommend that you review the 14 day weather forecast for Riverton before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 2° / -8° | 9 | 17 | 5 | 42 mm | Awful | Riverton in January |
| February | 4° / -6° | 8 | 17 | 4 | 35 mm | Awful | Riverton in February |
| March | 9° / -2° | 7 | 20 | 5 | 55 mm | Awful | Riverton in March |
| April | 13° / 2° | 8 | 19 | 2 | 67 mm | Awful | Riverton in April |
| May | 20° / 6° | 8 | 23 | 0 | 61 mm | Ok | Riverton in May |
| June | 27° / 12° | 4 | 26 | 0 | 27 mm | Perfect | Riverton in June |
| July | 33° / 17° | 4 | 27 | 0 | 11 mm | Good | Riverton in July |
| August | 31° / 16° | 4 | 27 | 0 | 20 mm | Good | Riverton in August |
| September | 27° / 12° | 5 | 25 | 0 | 38 mm | Perfect | Riverton in September |
| October | 17° / 5° | 4 | 26 | 1 | 39 mm | Good | Riverton in October |
| November | 9° / -2° | 5 | 21 | 3 | 35 mm | Bad | Riverton in November |
| December | 2° / -8° | 10 | 16 | 5 | 53 mm | Awful | Riverton in December |