Climate and monthly weather forecast
Marthasville, MO

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Weather in January

January, like December, in Marthasville, Missouri, is another cold winter month, with an average temperature ranging between max 38.1°F (3.4°C) and min 24.1°F (-4.4°C). Temperature records mark January as the coldest month, with highs averaging 38.1°F (3.4°C) and lows at 24.1°F (-4.4°C). Weather in January »

Weather in February

February, the last month of the winter in Marthasville, is a chilly month, with temperature in the range of an average low of 27.9°F (-2.3°C) and an average high of 42.8°F (6°C). February's arrival brings an average high-temperature of a frosty 42.8°F (6°C), demonstrating subtle variation from the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Marthasville, is a fresh month, with temperature in the range of an average low of 37.6°F (3.1°C) and an average high of 54.9°F (12.7°C). A shift in the average high-temperature is noticeable in March, changing from a chilly 42.8°F (6°C) in February to a cool 54.9°F (12.7°C). Weather in March »

Weather in April

April in Marthasville, Missouri, is an enjoyable spring month, with an average temperature varying between 66.2°F (19°C) and 46.9°F (8.3°C). With the beginning of April, Marthasville's average high-temperature sees an increase, transitioning from a fresh 54.9°F (12.7°C) in March to an enjoyable 66.2°F (19°C). Weather in April »

Weather in May

May, the last month of the spring in Marthasville, is a warm month, with temperature in the range of an average high of 75.7°F (24.3°C) and an average low of 56.3°F (13.5°C). With the onset of May, Marthasville experiences a temperature shift, with the average high-temperature moving from a refreshing 66.2°F (19°C) in April to a moderately hot 75.7°F (24.3°C). Weather in May »

Weather in June

The first month of the summer, June, is also a moderately hot month in Marthasville, Missouri, with an average temperature fluctuating between 64.9°F (18.3°C) and 85.6°F (29.8°C). The start of June brings a shift in the average high-temperature, increasing from May's moderately hot 75.7°F (24.3°C) to a still warm 85.6°F (29.8°C). Weather in June »

Weather in July

July in Marthasville, Missouri, is a tropical summer month, with an average temperature ranging between min 68.2°F (20.1°C) and max 88.3°F (31.3°C). The month of July sees the highest average temperatures, reaching 88.3°F (31.3°C) at the peak and 68.2°F (20.1°C) at the low. For July, the heat index is computed to be a blisteringly hot 104°F (40°C). Weather in July »

Weather in August

August, the last month of the summer in Marthasville, is another tropical month, with an average temperature fluctuating between 87.1°F (30.6°C) and 65.8°F (18.8°C). August brings an average high-temperature of a still hot 87.1°F (30.6°C), showing a slight difference from July's 88.3°F (31.3°C). Weather in August »

Weather in September

The first month of the autumn, September, is still a warm month in Marthasville, Missouri, with temperature in the range of an average low of 59.2°F (15.1°C) and an average high of 80.1°F (26.7°C). The beginning of September brings a minor change in the average high-temperature, shifting from a tropical 87.1°F (30.6°C) in August to a warm 80.1°F (26.7°C). Weather in September »

Weather in October

October, the same as September, is another enjoyable autumn month in Marthasville, Missouri, with an average temperature varying between 48.2°F (9°C) and 66.2°F (19°C). Marthasville in October demonstrates a small temperature transition, adjusting from an average high of a warm 80.1°F (26.7°C) in September to a comfortable 66.2°F (19°C). Weather in October »

Weather in November

November, the last month of the autumn in Marthasville, is another cool month, with an average temperature varying between 37.2°F (2.9°C) and 53.8°F (12.1°C). Marthasville's progression into November involves a drop in the average high-temperature, receding from a comfortable 66.2°F (19°C) in October to a cool 53.8°F (12.1°C). Weather in November »

Weather in December

The first month of the winter, December, is still a chilly month in Marthasville, Missouri, with temperature in the range of an average high of 43.2°F (6.2°C) and an average low of 29.7°F (-1.3°C). The arrival of December corresponds with a temperature reduction, down from November's fresh 53.8°F (12.1°C) to a chilly 43.2°F (6.2°C). Weather in December »
Updated: Jun 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

January is Marthasville's coldest month, registering average high temperatures of 38.1°F (3.4°C) and lows of 24.1°F (-4.4°C).

How much does it rain?

Throughout the year, in Marthasville, there are 133.1 rainfall days, and 27.24" (692mm) of precipitation is accumulated.

When does it snow?

Months with snowfall are January through March, September, November and December.

How many days does it snow?

Throughout the year, there are 16.6 snowfall days, and 5.87" (149mm) of snow is accumulated.

What is the month with the least sunshine?

The month with the least sunshine is January, with an average of 4.6h of sunshine.

What is the month with the lowest UV index?

The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.

What is the driest month?

The month with the least rainfall is February, when the rain falls for 7.1 days and typically collects 1.42" (36mm) of precipitation.

What is the snowiest month?

February is the month with the most snowfall. Snow falls for 4.9 days and accumulates 2.09" (53mm) of snow.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, 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?

The wettest months are April and May, with an average 3.23" (82mm) of rainfall.

When it does not snow?

In Marthasville, snow does not fall in April through August and October.

What is the most humid month in Marthasville?

May is the most humid month, with an average relative humidity of 78%.

When are the longest days?

With an average of 14h and 48min of daylight, June has the longest days of the year.

What is the month with the most sunshine?

The months with the most sunshine are June and July, with an average of 10.3h of sunshine.

When is the highest UV index?

The months with the highest UV index are June through August, with an average maximum UV index of 6.

What part of the year is the hottest?

July is the warmest month, with an average high-temperature of 88.3°F (31.3°C) and an average low-temperature of 68.2°F (20.1°C).

What is the least humid month?

October is the least humid month, with an average relative humidity of 72%.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 9h and 30min of daylight.

Average temperature
Marthasville, MO

Average temperature - Marthasville, 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 (38.1°F).

The month with the highest average low temperature is July (68.2°F).
The coldest month (with the lowest average low temperature) is January (24.1°F).

Average pressure
Marthasville, MO

Average pressure - Marthasville, MO

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

Average wind speed
Marthasville, MO

Average wind speed - Marthasville, MO

The windiest month (with the highest average wind speed) is January (8.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

Average humidity
Marthasville, MO

Average humidity - Marthasville, MO

The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (72%).

Average rainfall
Marthasville, MO

Average rainfall - Marthasville, MO

The wettest months (with the highest rainfall) are April and May (3.23").
The driest month (with the least rainfall) is February (1.42").

Average rainfall days
Marthasville, MO

Average rainfall days - Marthasville, MO

The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is January (6.2 days).

Average snowfall
Marthasville, MO

Average snowfall - Marthasville, MO

The month with the highest snowfall is February (2.09").
The months with the least snowfall are April, May, June, July, August and October (0").

Average snowfall days
Marthasville, MO

Average snowfall days - Marthasville, MO

The month with the highest number of snowfall days is January (5.1 days).
The months with the least snowfall days are May, June, July and August (0 days).

Average daylight / Average sunshine
Marthasville, MO

Average daylight / Average sunshine - Marthasville, MO

The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).

The months with the most sunshine are June and July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).

Average sunshine days
Marthasville, MO

Average sunshine days - Marthasville, MO

The month with the most sunshine days is December (20.6 days).
The month with the least sunshine days is May (12.8 days).

Average UV index
Marthasville, MO

Average UV index - Marthasville, MO

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

Average cloud cover
Marthasville, MO

Average cloud cover - Marthasville, MO

The months with the most cloud cover are January and February (Cloud cover 50).
The months with the least cloud cover are June, July and August (Cloud cover 30).

Average visibility
Marthasville, MO

Average visibility - Marthasville, MO

The months with the highest visibility are January, February, March, April, June, July, September, October, November and December (6mi).
The months with the lowest visibility are May and August (5mi).

Marthasville, Missouri, USA

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