Harrisburg weather by month & the best time to visit
United States · small town · humid subtropical climate
The best time to visit Harrisburg is May — its sunniest month (Sunshine Score 72/100), with August and June close behind. Harrisburg averages about 2,080 hours of sunshine a year. Daytime highs around 23°C / 73°F and roughly 105 mm of rain in May.
When is the best time to visit Harrisburg?
For sunshine, the best time to visit Harrisburg is May, then August and June. The dullest month is January (0/100, 71 mm of rain). The full month-by-month picture is in the table below.
How sunny is Harrisburg?
Harrisburg gets a moderate 2,080 hours of sunshine a year. 72 Sunshine Score points separate May (72) from January (0), so the month you pick matters. It ranks #368 of 580 destinations in United States for annual sunshine, below the national median of 2,279 hours. The year's 1,166 mm of rain spreads fairly evenly across the months, with no pronounced dry season.
Sunshine Score by month
| Month | Score | Day high | Night low | Rain | UV |
|---|---|---|---|---|---|
| January | 0 | 3° / 37°F | -6° / 21°F | 71 mm | 1 |
| February | 0 | 4° / 39°F | -5° / 23°F | 71 mm | 2 |
| March | 13 | 10° / 50°F | -1° / 30°F | 84 mm | 3 |
| April | 55 | 17° / 63°F | 5° / 41°F | 96 mm | 5 |
| May | 72 | 23° / 73°F | 11° / 52°F | 105 mm | 6 |
| June | 70 | 28° / 82°F | 17° / 63°F | 116 mm | 7 |
| July | 70 | 31° / 88°F | 19° / 66°F | 115 mm | 7 |
| August | 72 | 30° / 86°F | 19° / 66°F | 105 mm | 6 |
| September | 69 | 26° / 79°F | 14° / 57°F | 119 mm | 5 |
| October | 65 | 19° / 66°F | 8° / 46°F | 111 mm | 3 |
| November | 25 | 12° / 54°F | 2° / 36°F | 79 mm | 2 |
| December | 0 | 5° / 41°F | -3° / 27°F | 94 mm | 1 |
Nearest destinations
Head-to-head
How Harrisburg compares month by month: Harrisburg vs Philadelphia · Harrisburg vs Washington · Harrisburg vs Baltimore · Harrisburg vs Allentown/Bethlehem · all comparisons
Harrisburg: questions and answers
What kind of destination is Harrisburg?
Harrisburg is a small town in United States with a humid subtropical climate.
How many hours of sunshine does Harrisburg get a year?
Harrisburg gets about 2,080 hours of sunshine a year, at its best around May.
When is the best time to visit Harrisburg?
The sunniest time to visit Harrisburg is May, when the Sunshine Score peaks at 72/100 (with August and June close behind). Expect daytime highs around 23°C / 73°F.
What is the least sunny month in Harrisburg?
January is the least sunny month in Harrisburg, scoring 0/100 with about 71 mm of rain.
How strong is the sun in Harrisburg?
The typical midday UV index in Harrisburg peaks around 7 (high) in June, 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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