Imperial weather by month & the best time to visit
United States · small town · hot desert climate

The best time to visit Imperial is April — its sunniest month (Sunshine Score 99/100), with October and March close behind. Imperial averages about 3,841 hours of sunshine a year. Daytime highs around 30°C / 86°F and roughly 5 mm of rain in April.
When is the best time to visit Imperial?
For sunshine, the best time to visit Imperial is April, then October and March. The dullest month is July (0/100, 5 mm of rain). The full month-by-month picture is in the table below.
How sunny is Imperial?
Imperial is one of the sunniest places on Earth: about 3,841 hours of sunshine a year. 99 Sunshine Score points separate April (99) from July (0), so the month you pick matters. It ranks #3 of 580 destinations in United States for annual sunshine, above the national median of 2,279 hours. Rain has a clear season: the wettest stretch, around January, carries about 49% of the annual 104 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 97 | 20° / 68°F | 8° / 46°F | 15 mm | 3 |
| February | 97 | 22° / 72°F | 9° / 48°F | 19 mm | 5 |
| March | 98 | 26° / 79°F | 12° / 54°F | 11 mm | 7 |
| April | 99 | 30° / 86°F | 14° / 57°F | 5 mm | 9 |
| May | 70 | 35° / 95°F | 18° / 64°F | 2 mm | 10 |
| June | 10 | 41° / 106°F | 22° / 72°F | 0 mm | 11 |
| July | 0 | 43° / 109°F | 27° / 81°F | 5 mm | 11 |
| August | 0 | 43° / 109°F | 27° / 81°F | 7 mm | 10 |
| September | 30 | 39° / 102°F | 24° / 75°F | 6 mm | 9 |
| October | 99 | 32° / 90°F | 18° / 64°F | 8 mm | 6 |
| November | 98 | 25° / 77°F | 13° / 55°F | 9 mm | 4 |
| December | 89 | 19° / 66°F | 8° / 46°F | 17 mm | 3 |
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Imperial: questions and answers
What kind of destination is Imperial?
Imperial is a small town in United States with a hot desert climate.
How many hours of sunshine does Imperial get a year?
Imperial gets about 3,841 hours of sunshine a year, at its best around April.
When is the best time to visit Imperial?
The sunniest time to visit Imperial is April, when the Sunshine Score peaks at 99/100 (with October and March close behind). Expect daytime highs around 30°C / 86°F.
What is the least sunny month in Imperial?
July is the least sunny month in Imperial, scoring 0/100 with about 5 mm of rain.
How strong is the sun in Imperial?
The typical midday UV index in Imperial peaks around 11 (extreme) in June, easing to about 3 (moderate) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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