Annual mean 11°C · wettest around May · prevailing wind SW
Warmest
27.7 °C
Coldest
-3.4 °C
Wettest
83%
Windiest
5.8 m/s
Prevailing
SW
4.5 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
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 Galesburg over the whole year is 11°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -6°C. Galesburg has no sharply defined rainy season: the chance of rain on a given day runs from 64% in January, the driest month, to 75% in May, the wettest. Winds in Galesburg are highest in April, averaging 4.4 m/s (16 km/h), and lightest in August, at 2.2 m/s (8 km/h). The prevailing wind is from the SW. The clearest skies in Galesburg come in June, when the sky is typically 28% covered; January is the cloudiest month, at 56%.
Month by month Galesburg 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
-2°C
-6°C
-8°C
64%
56%
4.0 m/s
0
0
2
February
1°C
-4°C
-5°C
67%
44%
4.1 m/s
2
0
11
March
8°C
2°C
2°C
71%
49%
4.3 m/s
5
0
25
April
14°C
6°C
9°C
71%
44%
4.4 m/s
24
1
47
May
21°C
13°C
18°C
75%
43%
3.5 m/s
54
17
55
June
27°C
19°C
26°C
72%
28%
3.0 m/s
51
48
26
July
28°C
20°C
29°C
72%
31%
2.3 m/s
33
59
9
August
26°C
18°C
28°C
69%
30%
2.2 m/s
48
54
17
September
24°C
15°C
24°C
72%
30%
2.4 m/s
58
39
39
October
16°C
8°C
13°C
69%
40%
3.2 m/s
37
6
56
November
8°C
2°C
3°C
70%
39%
3.6 m/s
8
0
28
December
2°C
-2°C
-3°C
72%
50%
3.8 m/s
0
0
9
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 Galesburg weather by season
Year round, Galesburg has days of about -2°C at their warmest in January, its coolest month, and 28°C in July, its warmest; the coolest hours of the day run from -6°C to 20°C through the year, and the average temperature over the year is 11°C around the clock. Rain is most likely around May and least likely around January. 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.
Galesburg weather in winterDecember to February
High 0°CLow -4°CRain 67%
Winter in Galesburg has typical daily highs of about 0°C and lows of about -4°C, with a 67% chance of rain on a given day.
Galesburg weather in springMarch to May
High 14°CLow 7°CRain 72%
Spring in Galesburg has typical daily highs of about 14°C and lows of about 7°C, with a 72% chance of rain on a given day.
Galesburg weather in summerJune to August
High 27°CLow 19°CRain 71%
Summer in Galesburg has typical daily highs of about 27°C and lows of about 19°C, with a 71% chance of rain on a given day.
Galesburg weather in autumnSeptember to November
High 16°CLow 8°CRain 70%
Autumn in Galesburg has typical daily highs of about 16°C and lows of about 8°C, with a 70% chance of rain on a given day.
When is the rainy season in Galesburg?
Galesburg has no sharply defined rainy season: the chance of rain on a given day runs from 64% in January, the driest month, to 75% in May, the wettest.
What time of year is Galesburg windiest?
Winds in Galesburg are highest in April, averaging 4.4 m/s (16 km/h), and lightest in August, at 2.2 m/s (8 km/h). The prevailing wind is from the SW.
What is the average temperature in Galesburg year round?
The average temperature in Galesburg over the whole year is 11°C. July is the hottest month, with highs of about 28°C; January is the coldest, with lows of about -6°C.