Climate and monthly weather forecast
Rockville, MO

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Weather in January

January, like December, in Rockville, Missouri, is a wintry winter month, with temperature in the range of an average low of 25.2°F (-3.8°C) and an average high of 39.9°F (4.4°C). January, noted for its average high-temperature of 39.9°F (4.4°C) and an average low-temperature of 25.2°F (-3.8°C), is considered the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is a chilly month in Rockville, Missouri, with an average temperature ranging between min 28.9°F (-1.7°C) and max 44.2°F (6.8°C). Rockville registers an average high-temperature of a chilly 44.2°F (6.8°C) at the commencement of February, closely related to the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Rockville, is a moderate month, with temperature in the range of an average low of 39.4°F (4.1°C) and an average high of 56.3°F (13.5°C). The arrival of March brings an increase in high-temperatures, moving from a frosty 44.2°F (6.8°C) in February to a mild 56.3°F (13.5°C). Weather in March »

Weather in April

April in Rockville, Missouri, is a comfortable spring month, with an average temperature ranging between max 65.5°F (18.6°C) and min 47.1°F (8.4°C). As April sets, the average high-temperature shows an increase, moving up from a refreshing 56.3°F (13.5°C) in March to an enjoyable 65.5°F (18.6°C). Weather in April »

Weather in May

May, the last month of the spring in Rockville, is a moderately hot month, with temperature in the range of an average high of 73.8°F (23.2°C) and an average low of 56.3°F (13.5°C). The commencement of May sees a minor shift in the average high-temperature, moving from an enjoyable 65.5°F (18.6°C) in April to a moderately hot 73.8°F (23.2°C). Weather in May »

Weather in June

The first month of the summer, June, is also a moderately hot month in Rockville, Missouri, with an average temperature ranging between max 84.4°F (29.1°C) and min 66.7°F (19.3°C). The arrival of June sees a shift in the average high-temperature, moving from a moderately hot 73.8°F (23.2°C) in May to a still warm 84.4°F (29.1°C). Weather in June »

Weather in July

July is a tropical summer month in Rockville, Missouri, with an average temperature ranging between min 68.9°F (20.5°C) and max 87.4°F (30.8°C). With an average high-temperature of 87.4°F (30.8°C) and an average low-temperature of 68.9°F (20.5°C), July is the warmest month. The heat index value during July is estimated at a very hot 102.2°F (39°C). Weather in July »

Weather in August

August, the last month of the summer in Rockville, is also a moderately hot month, with temperature in the range of an average high of 85.6°F (29.8°C) and an average low of 66.7°F (19.3°C). Rockville indicates an average high-temperature of a warm 85.6°F (29.8°C) in August, showing minor variation from July's 87.4°F (30.8°C). Weather in August »

Weather in September

September, the first month of the autumn in Rockville, is also a moderately hot month, with temperature in the range of an average high of 79°F (26.1°C) and an average low of 60.3°F (15.7°C). A mild shift in the average high-temperature occurs in September, reducing from 85.6°F (29.8°C) in August to a still moderately hot 79°F (26.1°C). Weather in September »

Weather in October

October, like September, in Rockville, Missouri, is another enjoyable autumn month, with temperature in the range of an average low of 48.9°F (9.4°C) and an average high of 66.6°F (19.2°C). Rockville, Missouri, in October demonstrates a small temperature transition, adjusting from an average high of a warm 79°F (26.1°C) in September to a comfortable 66.6°F (19.2°C). Weather in October »

Weather in November

November, the last month of the autumn in Rockville, is also a fresh month, with an average temperature varying between 54.5°F (12.5°C) and 38.3°F (3.5°C). Setting in of November comes with a decrease in the average high-temperature, moving from a comfortable 66.6°F (19.2°C) in October to a cool 54.5°F (12.5°C). Weather in November »

Weather in December

The first month of the winter, December, is also a frosty month in Rockville, Missouri, with an average temperature fluctuating between 43.7°F (6.5°C) and 29.5°F (-1.4°C). Rockville in December undergoes a mild reduction in the average high-temperature, shifting from November's fresh 54.5°F (12.5°C) to a chilly 43.7°F (6.5°C). Weather in December »
Updated: Aug 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the coldest month?

Rockville experiences its average lowest temperatures in January, reaching a peak of 39.9°F (4.4°C) and a minimum of 25.2°F (-3.8°C).

What is the driest month in Rockville?

The month with the least rainfall is January, when the rain falls for 5 days and typically collects 0.79" (20mm) of precipitation.

How much does it rain?

In Rockville, during the entire year, the rain falls for 130.6 days and collects up to 25.43" (646mm) of precipitation.

When does it snow?

January through March, May, October through December are months with snowfall.

How many days does it snow?

In Rockville, during the entire year, snow falls for 12.2 days and aggregates up to 4.29" (109mm) of snow.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 5.3h of sunshine.

What are the months 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.

When does it snow the most?

February is the month with the most snowfall. Snow falls for 4 days and accumulates 1.69" (43mm) 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.

When it does not snow in Rockville?

In Rockville, snow does not fall in April, June through September.

What is the most humid month?

May is the most humid month, with an average relative humidity of 81%.

What is the wettest month?

May is the month with the most rainfall. Rain falls for 16.8 days and accumulates 4.49" (114mm) of precipitation.

When are the longest days?

The month with the longest days is June, with an average of 14h and 48min of daylight.

What is the month with the highest UV index in Rockville?

June is the month with the highest UV index, with an average maximum UV index of 7.

What is the hottest time of year?

In Rockville, the average temperatures in July are the highest, with a peak at 87.4°F (30.8°C) and a low of 68.9°F (20.5°C).

What month has the most sunshine?

The month with the most sunshine is July, with an average of 10.6h of sunshine.

What is the least humid month?

The least humid month is October, with an average relative humidity of 71%.

What is the month with the shortest days?

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

Average temperature
Rockville, MO

Average temperature - Rockville, MO

The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.9°F).

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (25.2°F).

Average pressure
Rockville, MO

Average pressure - Rockville, MO

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed
Rockville, MO

Average wind speed - Rockville, MO

The windiest month (with the highest average wind speed) is March (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

Average humidity
Rockville, MO

Average humidity - Rockville, MO

The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (71%).

Average rainfall
Rockville, MO

Average rainfall - Rockville, MO

The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is January (0.79").

Average rainfall days
Rockville, MO

Average rainfall days - Rockville, MO

The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (5 days).

Average snowfall
Rockville, MO

Average snowfall - Rockville, MO

The month with the highest snowfall is February (1.69").
The months with the least snowfall are April, June, July, August and September (0").

Average snowfall days
Rockville, MO

Average snowfall days - Rockville, MO

The month with the highest number of snowfall days is February (4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight / Average sunshine
Rockville, MO

Average daylight / Average sunshine - Rockville, 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 36min).

The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).

Average sunshine days
Rockville, MO

Average sunshine days - Rockville, MO

The month with the most sunshine days is January (22.7 days).
The month with the least sunshine days is May (12.2 days).

Average UV index
Rockville, MO

Average UV index - Rockville, MO

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 2).

Average visibility
Rockville, MO

Average visibility - Rockville, 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).

Rockville, Missouri, USA

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