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Cape Girardeau, Missouri climate

Cfa Humid subtropical

Cape Girardeau has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 90°F, while the coldest is January averaging around 27°F at night. Precipitation is fairly even year-round, totalling about 50 inches. Light snow accumulates each winter (9 inches of snow per year on average).

☀️ Summers

Hot

Highs near 90°F in July.

About 50 days a year above 90 °F

❄️ Winters

Cold

Lows near 27°F in January.

About 83 freezing nights a year

🌧️ Rain & snow

Wet

About 50 in of rain a year, plus 9 in of snow.

Snow falls through the winter months

⛅ Sky & trend

Partly cloudy

A roughly even mix of sun and cloud.

+1.1 °F vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Cape Girardeau climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	45	50	60	70	79	87	90	90	83	72	59	48
Avg temp (°F)	36	40	49	59	68	77	80	78	71	60	48	40
Avg low (°F)	27	31	38	48	58	66	69	67	59	48	38	31
Precipitation (in)	3.9	3.9	4.6	5.2	4.9	4.5	4.3	3.1	3.6	4.0	4.1	4.3
Snowfall (in)	2.7	3.0	1.1	—	—	—	—	—	—	0.1	0.2	1.8

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	45	50	60	70	79	87
Avg temp (°F)	36	40	49	59	68	77
Avg low (°F)	27	31	38	48	58	66
Precipitation (in)	3.9	3.9	4.6	5.2	4.9	4.5
Snowfall (in)	2.7	3.0	1.1	—	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	90	90	83	72	59	48
Avg temp (°F)	80	78	71	60	48	40
Avg low (°F)	69	67	59	48	38	31
Precipitation (in)	4.3	3.1	3.6	4.0	4.1	4.3
Snowfall (in)	—	—	—	0.1	0.2	1.8

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	10	9	11	11	11	9	9	8	7	8	9	10
Days with high ≥ 90°F (days)	—	—	—	—	1	11	17	14	7	0.4	—	—
Days with low ≤ 32°F (days)	22	17	10	2	—	—	—	—	—	2	11	19
Days with snowfall ≥ 1 in (days)	0.8	0.8	0.2	0.0	—	—	—	—	—	0.0	0.1	0.4

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	10	9	11	11	11	9
Days with high ≥ 90°F (days)	—	—	—	—	1	11
Days with low ≤ 32°F (days)	22	17	10	2	—	—
Days with snowfall ≥ 1 in (days)	0.8	0.8	0.2	0.0	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	9	8	7	8	9	10
Days with high ≥ 90°F (days)	17	14	7	0.4	—	—
Days with low ≤ 32°F (days)	—	—	—	2	11	19
Days with snowfall ≥ 1 in (days)	—	—	—	0.0	0.1	0.4

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	66	69	65	61	63	54	50	47	46	51	58	66
Clear days (≤ 30% cloud)	5	4	6	7	6	9	10	11	12	11	8	5
Partly cloudy days (30–70%)	9	8	9	9	10	10	12	11	9	9	8	10
Cloudy days (≥ 70%)	17	16	16	14	15	11	9	9	9	11	14	16
Relative humidity (%)	84	83	81	79	80	79	76	69	66	70	77	84
Wind speed (mph)	6.3	6.4	6.4	6.3	5.0	4.1	3.7	3.6	4.1	4.7	5.3	5.5

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	66	69	65	61	63	54
Clear days (≤ 30% cloud)	5	4	6	7	6	9
Partly cloudy days (30–70%)	9	8	9	9	10	10
Cloudy days (≥ 70%)	17	16	16	14	15	11
Relative humidity (%)	84	83	81	79	80	79
Wind speed (mph)	6.3	6.4	6.4	6.3	5.0	4.1

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	50	47	46	51	58	66
Clear days (≤ 30% cloud)	10	11	12	11	8	5
Partly cloudy days (30–70%)	12	11	9	9	8	10
Cloudy days (≥ 70%)	9	9	9	11	14	16
Relative humidity (%)	76	69	66	70	77	84
Wind speed (mph)	3.7	3.6	4.1	4.7	5.3	5.5

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Paducah (NOAA GHCN station USW00003816), about 71 km from the city centre.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →