Mason City weather by month & the best time to visit
United States · small town · hot-summer continental climate
The best time to visit Mason City is September — its sunniest month (Sunshine Score 75/100), with August and July close behind. Mason City averages about 2,397 hours of sunshine a year. Daytime highs around 23°C / 73°F and roughly 98 mm of rain in September.
When is the best time to visit Mason City?
For sunshine, the best time to visit Mason City is September, then August and July. The dullest month is January (0/100, 24 mm of rain). The full month-by-month picture is in the table below.
How sunny is Mason City?
Mason City gets a moderate 2,397 hours of sunshine a year. 75 Sunshine Score points separate September (75) from January (0), so the month you pick matters. It ranks #247 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 June, carries about 40% of the annual 937 mm.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | -4° / 25°F | -13° / 9°F | 24 mm | 1 |
| February | 0 | -2° / 28°F | -12° / 10°F | 32 mm | 2 |
| March | 0 | 6° / 43°F | -4° / 25°F | 51 mm | 3 |
| April | 37 | 14° / 57°F | 2° / 36°F | 98 mm | 5 |
| May | 70 | 21° / 70°F | 9° / 48°F | 124 mm | 6 |
| June | 66 | 26° / 79°F | 15° / 59°F | 146 mm | 7 |
| July | 73 | 28° / 82°F | 17° / 63°F | 106 mm | 8 |
| August | 74 | 26° / 79°F | 16° / 61°F | 102 mm | 7 |
| September | 75 | 23° / 73°F | 11° / 52°F | 98 mm | 5 |
| October | 40 | 14° / 57°F | 3° / 37°F | 73 mm | 3 |
| November | 0 | 6° / 43°F | -3° / 27°F | 42 mm | 2 |
| December | 0 | -1° / 30°F | -9° / 16°F | 41 mm | 1 |
Nearest destinations
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Mason City: questions and answers
What kind of destination is Mason City?
Mason City is a small town in United States at 362 m elevation with a hot-summer continental climate.
How many hours of sunshine does Mason City get a year?
Mason City gets about 2,397 hours of sunshine a year, at its best around September.
When is the best time to visit Mason City?
The sunniest time to visit Mason City is September, when the Sunshine Score peaks at 75/100 (with August and July close behind). Expect daytime highs around 23°C / 73°F.
What is the least sunny month in Mason City?
January is the least sunny month in Mason City, scoring 0/100 with about 24 mm of rain.
How strong is the sun in Mason City?
The typical midday UV index in Mason City peaks around 8 (very high) in July, easing to about 1 (low) in January. Month-by-month midday UV values are in the UV column of the table on this page.
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