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The temperatures in Monticello in May are quite cold with temperatures between 9°C and 19°C, warm clothes are a must.
You can expect rain for roughly half of the month of May in Monticello. 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.
Please note that Monticello can expect a few days of snow in May.
Our weather forecast can give you a great sense of what weather to expect in Monticello in May 2025.
If you’re planning to visit Monticello in the near future, we highly recommend that you review the 14 day weather forecast for Monticello before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | -8° / -14° | 3 | 11 | 18 | 27 mm | Awful | Monticello in January |
| February | -6° / -13° | 2 | 11 | 15 | 35 mm | Awful | Monticello in February |
| March | 3° / -4° | 6 | 14 | 11 | 73 mm | Awful | Monticello in March |
| April | 11° / 2° | 7 | 17 | 6 | 105 mm | Awful | Monticello in April |
| May | 19° / 9° | 8 | 23 | 1 | 132 mm | Ok | Monticello in May |
| June | 24° / 14° | 8 | 22 | 0 | 186 mm | Good | Monticello in June |
| July | 27° / 17° | 7 | 24 | 0 | 144 mm | Good | Monticello in July |
| August | 26° / 15° | 6 | 25 | 0 | 120 mm | Perfect | Monticello in August |
| September | 22° / 11° | 4 | 26 | 0 | 84 mm | Good | Monticello in September |
| October | 13° / 5° | 5 | 23 | 3 | 90 mm | Bad | Monticello in October |
| November | 4° / -2° | 4 | 18 | 8 | 51 mm | Awful | Monticello in November |
| December | -4° / -9° | 4 | 11 | 16 | 48 mm | Awful | Monticello in December |