Click on a day for an hourly weather forecast
The temperatures in Oshkosh in May are quite cold with temperatures between 9°C and 18°C, warm clothes are a must.
You can expect rain for roughly half of the month of May in Oshkosh. 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 Oshkosh in May 2025.
If you’re planning to visit Oshkosh in the near future, we highly recommend that you review the 14 day weather forecast for Oshkosh before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -5° / -12° | 8 | 19 | 4 | 35 mm | Awful | Oshkosh in January |
| February | -4° / -11° | 7 | 16 | 4 | 38 mm | Awful | Oshkosh in February |
| March | 4° / -4° | 6 | 20 | 4 | 73 mm | Awful | Oshkosh in March |
| April | 10° / 2° | 8 | 19 | 3 | 113 mm | Awful | Oshkosh in April |
| May | 18° / 9° | 8 | 23 | 0 | 122 mm | Ok | Oshkosh in May |
| June | 23° / 15° | 9 | 21 | 0 | 122 mm | Good | Oshkosh in June |
| July | 26° / 17° | 8 | 23 | 0 | 102 mm | Good | Oshkosh in July |
| August | 25° / 17° | 8 | 23 | 0 | 104 mm | Good | Oshkosh in August |
| September | 21° / 13° | 7 | 23 | 0 | 90 mm | Ok | Oshkosh in September |
| October | 14° / 6° | 7 | 23 | 0 | 98 mm | Ok | Oshkosh in October |
| November | 6° / 0° | 6 | 23 | 1 | 59 mm | Bad | Oshkosh in November |
| December | -1° / -7° | 8 | 19 | 4 | 54 mm | Awful | Oshkosh in December |