Annual mean 16°C · wettest around December · prevailing wind W
Warmest
30.8 °C
Coldest
8.3 °C
Wettest
60%
Windiest
3.9 m/s
Prevailing
W
2.9 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Harrisburg over the whole year is 16°C. July is the hottest month, with highs of about 31°C; January is the coldest, with lows of about 2°C. Harrisburg has no sharply defined rainy season: the chance of rain on a given day runs from 54% in July, the driest month, to 60% in December, the wettest. Winds in Harrisburg are highest in March, averaging 2.4 m/s (9 km/h), and lightest in August, at 1.4 m/s (5 km/h). The prevailing wind is from the W. The clearest skies in Harrisburg come in July, when the sky is typically 33% covered; February is the cloudiest month, at 44%.
Month by month Harrisburg climate by month: average temperatures year round · click a month to read it
Month
High
Low
Feels like
Chance of rain
Cloud
Wind
Being outside
Sun
Walking
January
9°C
2°C
5°C
56%
39%
2.0 m/s
8
0
36
February
12°C
5°C
9°C
56%
44%
2.3 m/s
23
0
54
March
16°C
7°C
12°C
56%
39%
2.4 m/s
38
2
65
April
20°C
11°C
18°C
56%
33%
2.4 m/s
62
15
64
May
24°C
16°C
23°C
55%
42%
2.0 m/s
62
42
39
June
28°C
20°C
29°C
54%
36%
1.8 m/s
31
63
10
July
31°C
22°C
33°C
54%
33%
1.6 m/s
6
49
1
August
29°C
21°C
31°C
55%
41%
1.4 m/s
17
54
5
September
27°C
18°C
27°C
55%
39%
1.6 m/s
44
56
19
October
22°C
12°C
21°C
54%
33%
1.4 m/s
69
25
58
November
15°C
6°C
12°C
55%
34%
1.6 m/s
36
4
68
December
11°C
3°C
7°C
60%
41%
1.7 m/s
15
0
49
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Harrisburg weather by season
Year round, Harrisburg has days of about 9°C at their warmest in January, its coolest month, and 31°C in July, its warmest; the coolest hours of the day run from 2°C to 22°C through the year, and the average temperature over the year is 16°C around the clock. Rain is most likely around December and least likely around July. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Harrisburg weather in winterDecember to February
High 11°CLow 3°CRain 57%
Winter in Harrisburg has typical daily highs of about 11°C and lows of about 3°C, with a 57% chance of rain on a given day.
Harrisburg weather in springMarch to May
High 20°CLow 11°CRain 56%
Spring in Harrisburg has typical daily highs of about 20°C and lows of about 11°C, with a 56% chance of rain on a given day.
Harrisburg weather in summerJune to August
High 29°CLow 21°CRain 54%
Summer in Harrisburg has typical daily highs of about 29°C and lows of about 21°C, with a 54% chance of rain on a given day.
Harrisburg weather in autumnSeptember to November
High 21°CLow 12°CRain 55%
Autumn in Harrisburg has typical daily highs of about 21°C and lows of about 12°C, with a 55% chance of rain on a given day.
When is the rainy season in Harrisburg?
Harrisburg has no sharply defined rainy season: the chance of rain on a given day runs from 54% in July, the driest month, to 60% in December, the wettest.
What time of year is Harrisburg windiest?
Winds in Harrisburg are highest in March, averaging 2.4 m/s (9 km/h), and lightest in August, at 1.4 m/s (5 km/h). The prevailing wind is from the W.
What is the average temperature in Harrisburg year round?
The average temperature in Harrisburg over the whole year is 16°C. July is the hottest month, with highs of about 31°C; January is the coldest, with lows of about 2°C.