Annual mean 15°C · wettest around June · prevailing wind SW
Warmest
30.1 °C
Coldest
2.7 °C
Wettest
54%
Windiest
5.1 m/s
Prevailing
SW
3.9 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 Cape Girardeau over the whole year is 15°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about 0°C. Cape Girardeau has no sharply defined rainy season: the chance of rain on a given day runs from 41% in September, the driest month, to 55% in June, the wettest. Winds in Cape Girardeau are highest in March, averaging 3.7 m/s (13 km/h), and lightest in August, at 1.8 m/s (6 km/h). The prevailing wind is from the SW. The clearest skies in Cape Girardeau come in June, when the sky is typically 22% covered; January is the cloudiest month, at 42%.
Month by month Cape Girardeau 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
4°C
0°C
-1°C
50%
42%
3.3 m/s
2
0
14
February
8°C
2°C
3°C
46%
38%
3.6 m/s
9
0
33
March
13°C
6°C
8°C
50%
37%
3.7 m/s
20
0
53
April
18°C
10°C
15°C
44%
33%
3.5 m/s
47
7
65
May
24°C
16°C
22°C
50%
34%
2.9 m/s
61
36
45
June
29°C
21°C
30°C
55%
22%
2.4 m/s
32
60
9
July
30°C
23°C
33°C
51%
24%
2.0 m/s
11
46
2
August
29°C
21°C
31°C
54%
26%
1.8 m/s
23
55
5
September
27°C
17°C
27°C
41%
24%
1.8 m/s
44
55
23
October
21°C
11°C
18°C
51%
27%
2.4 m/s
55
21
58
November
12°C
5°C
8°C
46%
29%
2.7 m/s
20
1
53
December
7°C
3°C
3°C
49%
38%
3.0 m/s
5
0
29
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 Cape Girardeau weather by season
Year round, Cape Girardeau has days of about 4°C at their warmest in January, its coolest month, and 30°C in July, its warmest; the coolest hours of the day run from 0°C to 23°C through the year, and the average temperature over the year is 15°C around the clock. Rain is most likely around June and least likely around September. 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.
Cape Girardeau weather in winterDecember to February
High 6°CLow 2°CRain 48%
Winter in Cape Girardeau has typical daily highs of about 6°C and lows of about 2°C, with a 48% chance of rain on a given day.
Cape Girardeau weather in springMarch to May
High 18°CLow 11°CRain 48%
Spring in Cape Girardeau has typical daily highs of about 18°C and lows of about 11°C, with a 48% chance of rain on a given day.
Cape Girardeau weather in summerJune to August
High 29°CLow 21°CRain 54%
Summer in Cape Girardeau has typical daily highs of about 29°C and lows of about 21°C, with a 54% chance of rain on a given day.
Cape Girardeau weather in autumnSeptember to November
High 20°CLow 11°CRain 46%
Autumn in Cape Girardeau has typical daily highs of about 20°C and lows of about 11°C, with a 46% chance of rain on a given day.
When is the rainy season in Cape Girardeau?
Cape Girardeau has no sharply defined rainy season: the chance of rain on a given day runs from 41% in September, the driest month, to 55% in June, the wettest.
What time of year is Cape Girardeau windiest?
Winds in Cape Girardeau are highest in March, averaging 3.7 m/s (13 km/h), and lightest in August, at 1.8 m/s (6 km/h). The prevailing wind is from the SW.
What is the average temperature in Cape Girardeau year round?
The average temperature in Cape Girardeau over the whole year is 15°C. July is the hottest month, with highs of about 30°C; January is the coldest, with lows of about 0°C.