Climate and monthly weather forecast
Cape Girardeau, MO

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A unique aerial panorama of the Cape Girardeau in Missouri, with a clear view of the large Mississippi River outback
A unique aerial panorama of the Cape Girardeau in Missouri, with a clear view of the large Mississippi River outback

The climate of Cape Girardeau

Cape Girardeau, positioned in the state of Missouri, USA, sits within a climatic area classified as Cfa or humid subtropical. Under the Köppen climate classification system, this suggests the area does not experience a dry season. Variability is evident across the various weather parameters throughout the year. Monthly average temperatures range from lows of 27.9°F (-2.3°C) in winter months to highs of 88.3°F (31.3°C) in the height of summer. Monthly average humidity also experiences minor fluctuations, from a low of 69% in October to a high of 78% in both March and May.

Rainfall levels see some variance, with the highest monthly average amount in April at 4.33in and the lowest in September at 1.5in. Similarly, days with rainfall span from 9.8 days in January to a high of 17 days in July. As expected in a subtropical climate, snowfall is a rare occurrence, with the highest monthly average amount at 2.17in in February. Unsurprisingly, most months record no days with snowfall.

Cape Girardeau enjoys 9.6 to 14.7 daylight hours a day, with the longest days in June and the shortest in December. Sunshine duration also swings between 4.8 hours per day in February and a generous 10.7 hours per day in June. Meanwhile, the UV index remains mostly moderate, peaking at 6 from May to August. Cloud cover is relatively constant throughout the year, slightly increasing in the colder months. The general wind speed ranges around 5.7mph (9.2km/h) in August to 9.1mph (14.6km/h) in both January and February, with highest gust speeds reaching 14.6mph (23.5km/h) in January.

The best time to visit Cape Girardeau

For visitors looking to experience the ideal weather conditions, the best time to visit is between May and June. During these months temperatures are warm, with average highs ranging from 76.3°F (24.6°C) in May to 86°F (30°C) in June. This period also sees the highest amount of sunshine, with an average of 9.3 to 10.7 hours per day respectively.

Moreover, rainfall is moderate with averages oscillating from 3.98in in May to 2.99in in June, providing opportunities to explore the city’s vibrant landscapes without significant disturbance from showers. While the UV index peaking at 6 suggests visitors should take precautions for sun protection.

The worst time to visit Cape Girardeau

Given the climatic characteristics, the least desirable time to visit Cape Girardeau would largely be in winter, particularly January and February. During these months, average highs descend to the 40s°F with lows dropping to around freezing point. In addition, this period experiences meager sunlight at approximately 4.9 hours per day and increased probability of snowfall.

Spring weather in Cape Girardeau

Spring in Cape Girardeau from March to May presents a temperate climate landscape with high temperatures escalating from 56.3°F (13.5°C) in March to 76.3°F (24.6°C) by May. Rain incidence and duration also intensifies, peaking at an average of 4.33in spread over 15.3 days in April. Simultaneously, sunlight and daylight hours increase, reaching up to 9.3 hours and 14.2 hours by May, respectively.

Summer weather in Cape Girardeau

Summer months from June through August bring increased temperatures to Cape Girardeau, averaging from 86°F (30°C) in June to a peak of 88.3°F (31.3°C) in July. Correspondingly, humidity escalates slightly while rainfall levels decline after peaking in spring. Sunshine reaches its highest point of the year with an average of 10.7 hours per day in June. The UV index underscores the need for sun safety measures with ratings of 6 throughout this period.

Autumn weather in Cape Girardeau

Autumn in Cape Girardeau witnesses a gradual decrease in temperatures, with highs declining from 81.1°F (27.3°C) in September to 68.9°F (20.5°C) by October’s end. Concurrently, rainfall tends to dip, with September seeing the least yearly rainfall at just 1.5in. Hours of sunshine and daylight start to shorten, winding down from 9.7 hours per day and 12.4 daylight hours in September.

Winter weather in Cape Girardeau

Winter is the coldest period in Cape Girardeau, with average highs bottoming out from 54.7°F (12.6°C) in November to 41°F (5°C) by January. The frequency of rainfall remains steady, with days of rainfall varying from 10.5 in October to 10.1 in November. Notably, this season records the only occurrence of snowfall, with monthly averages peaking at 2.17in in February. Sunshine is at its lowest during these months, offering a scant 5 hours per day by December.

Weather in January

The year in Cape Girardeau, Missouri commences with chilly January. Be prepared - the city experiences some of its lowest temperatures in this month, plummeting to as low as 27.9°F (-2.3°C) at night while reaching highs around 41°F (5°C) in daytime. Weather in January »

Weather in February

Transitioning from January, February marks the peak of winter in Cape Girardeau. Temperatures, although still on the colder side with lows at 31.5°F (-0.3°C), display a small hike from the previous month, making it slightly more bearable. Weather in February »

Weather in March

March brings a welcome transition from winter to spring in Cape Girardeau. With temperatures now climbing up to a comfortable 40.5°F (4.7°C) at night and a pleasant 56.3°F (13.5°C) during the day, the city starts to thaw under the spring sunshine. Weather in March »

Weather in April

April in Cape Girardeau, Missouri exhibits a marked transition towards warmer weather. Temperatures in the city rise incrementally, with balmy nights recording 49.8°F (9.9°C) and mild, sunlit days touching to 67.1°F (19.5°C). Weather in April »

Weather in May

May marks the commencement of summer in Cape Girardeau. With temperatures now hitting highs at 76.3°F (24.6°C) and lows at a mild 59°F (15°C), the city starts to heat up. The average rainfall slightly dips to 3.98" (101mm) from the preceding month. Weather in May »

Weather in June

Cape Girardeau enjoys the full swing of summer in June. As temperatures rise, high to as much as 86°F (30°C) and low to 67.5°F (19.7°C), this month stimulates ample outdoor activities. The humidity is relatively high, leading to warm days and sultry nights. Weather in June »

Weather in July

July represents the pinnacle of summer in Cape Girardeau. Reaching its highest peak at a warm 88.3°F (31.3°C) and reaching lows to 69.4°F (20.8°C), the city enjoys its warmest month. Rainfall does occur, but it does little to dampen the palpable summer energy. Weather in July »

Weather in August

As August arrives in Cape Girardeau, it brings a subtle hint of impending autumn. Though the days still see high temperatures at 86.2°F (30.1°C) and nights record 67.1°F (19.5°C), a slight dip compared to July, it is still firmly within the bounds of summer. Weather in August »

Weather in September

September marks an endearing transition from balmy summer to refreshing autumn. With the decrease in temperature to highs of 81.1°F (27.3°C) and lows of 61.3°F (16.3°C), the city start experiencing cooler nights and warm days. Weather in September »

Weather in October

October brings full-blown autumn to Cape Girardeau, with temperature highs falling to 68.9°F (20.5°C) and lows to a chilling 50.7°F (10.4°C). The city adopts a mellow, earthy tone with crispy leaves underfoot and cooler, shorter days. Weather in October »

Weather in November

November introduces early winter to Cape Girardeau with temperatures ranging between lows of 39.7°F (4.3°C) and highs of 54.7°F (12.6°C). The golden hues of the city begin to fade as winter slowly takes over. As the city prepares for the impending cold, the remaining autumn leaves form a beautiful contrast against the increasingly barren trees. Weather in November »

Weather in December

As Cape Girardeau welcomes December, the full force of winter sets in. Recorded lows of temperature hit 33.1°F (0.6°C) and highs are limited to around 45.5°F (7.5°C), creating a chilled ambiance. Snow showers drape the city in a blanket of white, transforming it into a winter wonderland. Weather in December »
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What part of the year is the coldest in Cape Girardeau?

In Cape Girardeau, January is the coldest month, with temperatures averaging a high of 41°F (5°C) and a low of 27.9°F (-2.3°C).

How much does it rain in Cape Girardeau?

Throughout the year, in Cape Girardeau, Missouri, there are 158.6 rainfall days, and 35.59" (904mm) of precipitation is accumulated.

When does it snow in Cape Girardeau?

January through April, October through December are months with snowfall.

How much does it snow in Cape Girardeau?

In Cape Girardeau, Missouri, during the entire year, snow falls for 11.2 days and aggregates up to 4.92" (125mm) of snow.

When is the lowest UV index in Cape Girardeau?

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index in Cape Girardeau.

When does it snow the most in Cape Girardeau?

The month with the most snowfall is February, when snow falls for 3.6 days and typically aggregates up to 2.17" (55mm) of snow.

What is the month with the least sunshine in Cape Girardeau?

February has the least sunshine of the year in Cape Girardeau, Missouri, with an average of 4.8h of sunshine.

What are the most humid months in Cape Girardeau?

The months with the highest humidity in Cape Girardeau, Missouri, are March and May, with an average relative humidity of 78%.

When is Daylight Saving Time (DST) in Cape Girardeau?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Cape Girardeau, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.

What is the rainiest month in Cape Girardeau?

The month with the most rainfall in Cape Girardeau, Missouri, is April, when the rain falls for 15.3 days and typically aggregates up to 4.33" (110mm) of precipitation.

When it does not snow in Cape Girardeau?

May through September are months without snowfall in Cape Girardeau, Missouri.

What is the month with the highest UV index in Cape Girardeau?

May through August, with an average maximum UV index of 6, are months with the highest UV index in Cape Girardeau.

When are the longest days in Cape Girardeau?

The month with the longest days in Cape Girardeau is June, with an average of 14h and 42min of daylight.

What month has the most sunshine in Cape Girardeau?

June has the most sunshine of the year in Cape Girardeau, Missouri, with an average of 10.7h of sunshine.

What part of the year is the hottest in Cape Girardeau?

Cape Girardeau's temperature records reveal July as the warmest month, marked by average highs of 88.3°F (31.3°C) and lows of 69.4°F (20.8°C).

What is the driest month in Cape Girardeau?

The month with the least rainfall in Cape Girardeau, Missouri, is September, when the rain falls for 11.4 days and typically collects 1.5" (38mm) of precipitation.

What is the least humid month in Cape Girardeau?

With an average relative humidity of 69%, October is the least humid month in Cape Girardeau.

What is the month with the shortest days in Cape Girardeau?

With an average of 9h and 36min of daylight, December has the shortest days of the year.

Average temperature
Cape Girardeau, MO

Average temperature - Cape Girardeau, MO

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (41°F).

The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).

Average pressure
Cape Girardeau, MO

Average pressure - Cape Girardeau, MO

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed
Cape Girardeau, MO

Average wind speed - Cape Girardeau, MO

The windiest months (with the highest average wind speed) are January and February (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

Average humidity
Cape Girardeau, MO

Average humidity - Cape Girardeau, MO

The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is October (69%).

Average rainfall
Cape Girardeau, MO

Average rainfall - Cape Girardeau, MO

The wettest month (with the highest rainfall) is April (4.33").
The driest month (with the least rainfall) is September (1.5").

Average rainfall days
Cape Girardeau, MO

Average rainfall days - Cape Girardeau, MO

The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (9.8 days).

Average snowfall
Cape Girardeau, MO

Average snowfall - Cape Girardeau, MO

The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days
Cape Girardeau, MO

Average snowfall days - Cape Girardeau, MO

The month with the highest number of snowfall days is January (3.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight / Average sunshine
Cape Girardeau, MO

Average daylight / Average sunshine - Cape Girardeau, MO

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).

Average sunshine days
Cape Girardeau, MO

Average sunshine days - Cape Girardeau, MO

The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is July (11.9 days).

Average UV index
Cape Girardeau, MO

Average UV index - Cape Girardeau, MO

The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).

Average cloud cover
Cape Girardeau, MO

Average cloud cover - Cape Girardeau, MO

The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June, August and September (Cloud cover 27).

Average visibility
Cape Girardeau, MO

Average visibility - Cape Girardeau, MO

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Cape Girardeau, Missouri, USA

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