Climate and monthly weather forecastRockville, MO
Climate and monthly weather forecast
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
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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).
The month with the least rainfall is January, when the rain falls for 5 days and typically collects 0.79" (20mm) of precipitation.
In Rockville, during the entire year, the rain falls for 130.6 days and collects up to 25.43" (646mm) of precipitation.
January through March, May, October through December are months with snowfall.
In Rockville, during the entire year, snow falls for 12.2 days and aggregates up to 4.29" (109mm) of snow.
January has the least sunshine of the year, with an average of 5.3h of sunshine.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
February is the month with the most snowfall. Snow falls for 4 days and accumulates 1.69" (43mm) of snow.
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.
In Rockville, snow does not fall in April, June through September.
May is the most humid month, with an average relative humidity of 81%.
May is the month with the most rainfall. Rain falls for 16.8 days and accumulates 4.49" (114mm) of precipitation.
The month with the longest days is June, with an average of 14h and 48min of daylight.
June is the month with the highest UV index, with an average maximum UV index of 7.
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).
The month with the most sunshine is July, with an average of 10.6h of sunshine.
The least humid month is October, with an average relative humidity of 71%.
With an average of 9h and 36min of daylight, December has the shortest days of the year.
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 in January:
30.17"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.92"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.14"Hg
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 in January:
9.9mph - Average wind speed in February:
10.2mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.2mph - Average wind speed in May:
8.5mph - Average wind speed in June:
8mph
- Average wind speed in July:
6.7mph - Average wind speed in August:
6.6mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.6mph - Average wind speed in December:
9.4mph
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
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 in January:
0.79" - Average rainfall in February:
1.02" - Average rainfall in March:
2.17" - Average rainfall in April:
2.91" - Average rainfall in May:
4.49" - Average rainfall in June:
2.05"
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 in January:
5 days - Average rainfall days in February:
6.6 days - Average rainfall days in March:
12.1 days - Average rainfall days in April:
14.2 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
13.7 days
- Average rainfall days in July:
14.8 days - Average rainfall days in August:
12.9 days - Average rainfall days in September:
12 days - Average rainfall days in October:
9.4 days - Average rainfall days in November:
7.6 days - Average rainfall days in December:
5.5 days
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
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 in January:
3.8 days - Average snowfall days in February:
4 days - Average snowfall days in March:
1.4 days - Average snowfall days in April:
0.1 days - Average snowfall days in May:
0.1 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
0.7 days - Average snowfall days in December:
2 days
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 in January:
9h and 54min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 30min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 36min
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).
- Average sunshine in January:
5h and 18min - Average sunshine in February:
5h and 24min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 24min - Average sunshine in May:
8h and 48min - Average sunshine in June:
10h and 24min
- Average sunshine in July:
10h and 36min - Average sunshine in August:
10h and 18min - Average sunshine in September:
9h and 18min - Average sunshine in October:
6h and 12min - Average sunshine in November:
5h and 36min - Average sunshine in December:
5h 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 in January:
22.7 days - Average sunshine days in February:
17.4 days - Average sunshine days in March:
16.2 days - Average sunshine days in April:
14.3 days - Average sunshine days in May:
12.2 days - Average sunshine days in June:
13.7 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
15.4 days - Average sunshine days in September:
16.4 days - Average sunshine days in October:
20 days - Average sunshine days in November:
20.5 days - Average sunshine days in December:
22.5 days
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
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 cloud cover
Rockville, MO
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 25).
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).
