Climate and monthly weather forecastRockville, IN
Climate and monthly weather forecast
Weather in January
January, like December, in Rockville, Indiana, is an icy winter month, with an average temperature fluctuating between 21°F (-6.1°C) and 33.4°F (0.8°C). The coldest period is January, when temperatures fluctuate between an average high of 33.4°F (0.8°C) and a low of 21°F (-6.1°C). Weather in January »Weather in February
The last month of the winter, February, is also an icy month in Rockville, Indiana, with an average temperature ranging between max 37.9°F (3.3°C) and min 24.8°F (-4°C). The shift into February reveals an average high-temperature of a still wintry 37.9°F (3.3°C), closely mirroring January's climate. Weather in February »Weather in March
The first month of the spring, March, is a cool month in Rockville, Indiana, with an average temperature ranging between min 34.9°F (1.6°C) and max 50.4°F (10.2°C). As February gives way to March, the average high-temperature displays an increase, moving from a wintry 37.9°F (3.3°C) to a cool 50.4°F (10.2°C). Weather in March »Weather in April
April in Rockville, Indiana, is an enjoyable spring month, with temperature in the range of an average low of 45.3°F (7.4°C) and an average high of 62.1°F (16.7°C). April shows a rise in the average high-temperature, moving from March's cool 50.4°F (10.2°C) to an enjoyable 62.1°F (16.7°C). Weather in April »Weather in May
The last month of the spring, May, is a pleasant month in Rockville, Indiana, with an average temperature fluctuating between 55.2°F (12.9°C) and 72°F (22.2°C). The rise of average high-temperatures is seen in May, with an increase from a refreshing 62.1°F (16.7°C) in April to a pleasant 72°F (22.2°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Rockville, Indiana, with temperature in the range of an average high of 79.9°F (26.6°C) and an average low of 63.9°F (17.7°C). The onset of June brings a minor temperature shift, with the average high-temperature moving from an agreeable 72°F (22.2°C) in May to a moderately hot 79.9°F (26.6°C). Weather in June »Weather in July
July, like June, in Rockville, Indiana, is a moderately hot summer month, with an average temperature ranging between max 82°F (27.8°C) and min 65.1°F (18.4°C). With its high average temperature of 82°F (27.8°C) and a low of 65.1°F (18.4°C), July is regarded as the warmest month. Throughout July, the heat index is computed to be a hot 89.6°F (32°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Rockville, Indiana, with an average temperature ranging between max 81.1°F (27.3°C) and min 63.7°F (17.6°C). Rockville observes an average high-temperature of a still warm 81.1°F (27.3°C) in August, barely different from 82°F (27.8°C) in July. Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Rockville, Indiana, with temperature in the range of an average low of 57.9°F (14.4°C) and an average high of 76.1°F (24.5°C). September observes an average high-temperature of a still moderately hot 76.1°F (24.5°C), marking an insignificant difference from August's 81.1°F (27.3°C). Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Rockville, Indiana, with an average temperature varying between 47.1°F (8.4°C) and 63.5°F (17.5°C). As October commences, the average high-temperature shows a reduction, transitioning from a warm 76.1°F (24.5°C) in September to a comfortable 63.5°F (17.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Rockville, Indiana, with an average temperature fluctuating between 36°F (2.2°C) and 49.3°F (9.6°C). Rockville's weather in November involves a decrease in the average high-temperature, moving down from October's enjoyable 63.5°F (17.5°C) to a chilly 49.3°F (9.6°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Rockville, Indiana, with an average temperature fluctuating between 38.7°F (3.7°C) and 28.4°F (-2°C). With the onset of December, Rockville experiences a modest temperature adjustment, with the average high-temperature receding from a chilly 49.3°F (9.6°C) in November to a cold 38.7°F (3.7°C). Weather in December »Updated: Feb 12, 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
January is the coldest month of the year in Rockville, registering average temperatures as high as 33.4°F (0.8°C) and as low as 21°F (-6.1°C).
Throughout the year, in Rockville, Indiana, there are 138.6 rainfall days, and 19.09" (485mm) of precipitation is accumulated.
January through April, October through December are months with snowfall in Rockville, Indiana.
In Rockville, Indiana, during the entire year, snow falls for 24 days and aggregates up to 6.14" (156mm) of snow.
With an average of 4.3h of sunshine, January has the least sunshine of the year.
The months with the lowest UV index in Rockville, Indiana, are January, February, November and December, with an average maximum UV index of 2.
February is the month with the least rainfall in Rockville. Rain falls for 6.9 days and accumulates 1.06" (27mm) of precipitation.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Rockville, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
The wettest months in Rockville, Indiana, are April and May, with an average 2.52" (64mm) of rainfall.
May through September are months without snowfall in Rockville.
The month with the longest days in Rockville is June, with an average of 14h and 54min of daylight.
The month with the most sunshine in Rockville is June, with an average of 10.2h of sunshine.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
In Rockville, the peak average temperatures are observed in July, with a high of 82°F (27.8°C) and a low of 65.1°F (18.4°C).
With an average relative humidity of 84%, July is the most humid month in Rockville.
The least humid month in Rockville is October, with an average relative humidity of 73%.
The month with the most snowfall in Rockville is December, when snow falls for 5.3 days and typically aggregates up to 1.69" (43mm) of snow.
The month with the shortest days in Rockville is December, with an average of 9h and 24min of daylight.
Average temperature
Rockville, IN
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (33.4°F).
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure
Rockville, IN
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.97"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Rockville, IN
- Average wind speed in January:
10mph - Average wind speed in February:
10.1mph - Average wind speed in March:
9.8mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.1mph - Average wind speed in June:
7.1mph
- Average wind speed in July:
6mph - Average wind speed in August:
6mph - Average wind speed in September:
6.8mph - Average wind speed in October:
8.7mph - Average wind speed in November:
9.3mph - Average wind speed in December:
9.3mph
The windiest month (with the highest average wind speed) is February (10.1mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity
Rockville, IN
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Rockville, IN
- Average rainfall in January:
1.38" - Average rainfall in February:
1.06" - Average rainfall in March:
1.38" - Average rainfall in April:
2.52" - Average rainfall in May:
2.52" - Average rainfall in June:
2.28"
The wettest months (with the highest rainfall) are April and May (2.52").
The driest month (with the least rainfall) is February (1.06").
Average rainfall days
Rockville, IN
- Average rainfall days in January:
7.5 days - Average rainfall days in February:
6.9 days - Average rainfall days in March:
11.6 days - Average rainfall days in April:
14.6 days - Average rainfall days in May:
17.9 days - Average rainfall days in June:
15 days
- Average rainfall days in July:
15.1 days - Average rainfall days in August:
12.3 days - Average rainfall days in September:
10.9 days - Average rainfall days in October:
10.2 days - Average rainfall days in November:
8.3 days - Average rainfall days in December:
8.3 days
The month with the highest number of rainy days is May (17.9 days).
The month with the least rainy days is February (6.9 days).
Average snowfall
Rockville, IN
The month with the highest snowfall is December (1.69").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Rockville, IN
- Average snowfall days in January:
7.1 days - Average snowfall days in February:
6.3 days - Average snowfall days in March:
3 days - Average snowfall days in April:
0.6 days - Average snowfall days in May:
0 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:
0.2 days - Average snowfall days in November:
1.5 days - Average snowfall days in December:
5.3 days
The month with the highest number of snowfall days is January (7.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Rockville, IN
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
4h and 18min - Average sunshine in February:
5h and 24min - Average sunshine in March:
6h and 24min - Average sunshine in April:
7h and 6min - Average sunshine in May:
8h and 42min - Average sunshine in June:
10h and 12min
- Average sunshine in July:
10h and 0min - Average sunshine in August:
9h and 18min - Average sunshine in September:
8h and 36min - Average sunshine in October:
6h and 54min - Average sunshine in November:
5h and 24min - Average sunshine in December:
4h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days
Rockville, IN
- Average sunshine days in January:
18 days - Average sunshine days in February:
15.8 days - Average sunshine days in March:
16.5 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
10 days - Average sunshine days in June:
11.4 days
- Average sunshine days in July:
12.4 days - Average sunshine days in August:
16.1 days - Average sunshine days in September:
16.7 days - Average sunshine days in October:
18.4 days - Average sunshine days in November:
19.9 days - Average sunshine days in December:
17.7 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (10 days).
Average UV index
Rockville, IN
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
Rockville, IN
The month with the most cloud cover is January (Cloud cover 57).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility
Rockville, IN
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
