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The weather in Thornton in April is very cold with temperatures between 3°C and 15°C, warm clothes are a must.
You can expect about 3 to 8 days of rain in Thornton during the month of April. It’s a good idea to bring along your umbrella so that you don’t get caught in poor weather.
You can expect a few days of snow in Thornton during April. It’s important to get out your snow boots and warm mittens to stay warm while you explore Thornton.
Our weather forecast can give you a great sense of what weather to expect in Thornton in April 2025.
If you’re planning to visit Thornton in the near future, we highly recommend that you review the 14 day weather forecast for Thornton before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 5° / -5° | 3 | 19 | 9 | 23 mm | Awful | Thornton in January |
| February | 5° / -5° | 3 | 14 | 11 | 34 mm | Awful | Thornton in February |
| March | 11° / 0° | 3 | 20 | 8 | 64 mm | Bad | Thornton in March |
| April | 15° / 3° | 3 | 21 | 6 | 60 mm | Ok | Thornton in April |
| May | 20° / 7° | 7 | 22 | 2 | 108 mm | Bad | Thornton in May |
| June | 28° / 14° | 4 | 26 | 0 | 69 mm | Perfect | Thornton in June |
| July | 31° / 17° | 4 | 27 | 0 | 88 mm | Good | Thornton in July |
| August | 30° / 16° | 2 | 29 | 0 | 51 mm | Good | Thornton in August |
| September | 26° / 13° | 2 | 28 | 0 | 47 mm | Perfect | Thornton in September |
| October | 17° / 5° | 2 | 26 | 3 | 37 mm | Ok | Thornton in October |
| November | 11° / 0° | 2 | 22 | 6 | 27 mm | Bad | Thornton in November |
| December | 5° / -5° | 3 | 19 | 9 | 22 mm | Awful | Thornton in December |