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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is a freezing cold winter month in Rockwell, Iowa, with temperature in the range of an average low of 9.9°F (-12.3°C) and an average high of 22.3°F (-5.4°C). Rockwell's January weather reaches an average high of 22.3°F (-5.4°C) and an average low of 9.9°F (-12.3°C), making it the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is also a subzero cold month in Rockwell, Iowa, with an average temperature varying between 13.5°F (-10.3°C) and 26.4°F (-3.1°C). February's weather displays an average high-temperature of a still freezing cold 26.4°F (-3.1°C), slightly varied from January's 22.3°F (-5.4°C). Weather in February »
Weather in March
March, the first month of the spring in Rockwell, is a cold month, with temperature in the range of an average high of 41.4°F (5.2°C) and an average low of 27.9°F (-2.3°C). Rockwell's transition into March marks a considerable rise in the average high-temperature, moving up from a subzero cold 26.4°F (-3.1°C) in February to a wintry 41.4°F (5.2°C). Weather in March »
Weather in April
April in Rockwell, Iowa, is a fresh spring month, with temperature in the range of an average low of 39.7°F (4.3°C) and an average high of 54.9°F (12.7°C). The shift into April is accompanied by a temperature increase, with the average high-temperature rising from a cold 41.4°F (5.2°C) in March to a cool 54.9°F (12.7°C). Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in Rockwell, Iowa, with an average temperature varying between 67.3°F (19.6°C) and 51.3°F (10.7°C). May signals a shift in the average high-temperature, moving from April's cool 54.9°F (12.7°C) to a refreshing 67.3°F (19.6°C). Weather in May »
Weather in June
June, the first month of the summer in Rockwell, is a warm month, with an average temperature varying between 76.8°F (24.9°C) and 60.8°F (16°C). An upsurge in temperatures occurs as May gives way to June, with average highs shifting from a refreshing 67.3°F (19.6°C) to a warm 76.8°F (24.9°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Rockwell, Iowa, with an average temperature fluctuating between 79.3°F (26.3°C) and 62.6°F (17°C). Rockwell's temperatures tend to reach their peak averages in July, with a high of 79.3°F (26.3°C) and a low of 62.6°F (17°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Rockwell, Iowa, with an average temperature varying between 77.4°F (25.2°C) and 60.3°F (15.7°C). With the onset of August, a modest change to a still warm 77.4°F (25.2°C) from July's 79.3°F (26.3°C) is noted in high-temperature. Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Rockwell, Iowa, with temperature in the range of an average low of 53.8°F (12.1°C) and an average high of 72.3°F (22.4°C). The average high-temperature for September is a pleasant 72.3°F (22.4°C), closely aligning with the temperature of the preceding month. Weather in September »
Weather in October
October, the same as September, in Rockwell, Iowa, is a moderate autumn month, with an average temperature fluctuating between 57.4°F (14.1°C) and 42.3°F (5.7°C). October's arrival is marked by a notable drop in high-temperatures, falling from an agreeable 72.3°F (22.4°C) in September to a moderate 57.4°F (14.1°C). Weather in October »
Weather in November
November, the last month of the autumn in Rockwell, is another cold month, with an average temperature ranging between min 30.2°F (-1°C) and max 42.6°F (5.9°C). The start of November brings a distinct shift in the average high-temperature, dropping from October's refreshing 57.4°F (14.1°C) to a wintry 42.6°F (5.9°C). Weather in November »
Weather in December
December, the first month of the winter in Rockwell, is still a freezing cold month, with temperature in the range of an average high of 28.2°F (-2.1°C) and an average low of 17.8°F (-7.9°C). December brings with it a considerable temperature decrease, with average high-temperatures dropping from November's icy 42.6°F (5.9°C) to a freezing cold 28.2°F (-2.1°C). Weather in December »
Updated: Aug 20, 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
What is the coldest time of year?
Rockwell witnesses the coldest weather in January, with temperatures averaging a high of 22.3°F (-5.4°C) and a low of 9.9°F (-12.3°C).
What is the most humid month?
The most humid month is January, with an average relative humidity of 89%.
What is the driest month?
January is the month with the least rainfall. Rain falls for 4.5 days and accumulates 1.06" (27mm) of precipitation.
How much does it rain?
In Rockwell, during the entire year, the rain falls for 145.9 days and collects up to 28.82" (732mm) of precipitation.
When does it snow?
January through May, October through December are months with snowfall in Rockwell.
How many days does it snow in Rockwell?
Throughout the year, there are 60.2 snowfall days, and 26.26" (667mm) of snow is accumulated.
What is the month with the least sunshine?
With an average of 3.5h of sunshine, January has the least sunshine of the year.
When is the lowest UV index?
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
What is the snowiest month?
The month with the most snowfall is February, when snow falls for 12.9 days and typically aggregates up to 7.48" (190mm) 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 wettest month?
June is the month with the most rainfall. Rain falls for 19.8 days and accumulates 4.65" (118mm) of precipitation.
When it does not snow?
June through September are months without snowfall in Rockwell, Iowa.
When are the longest days?
With an average of 15h and 18min of daylight, June has the longest days of the year.
When is the highest UV index?
With an average maximum UV index of 6, June is the month with the highest UV index.
What are the warmest months?
July, characterized by an average high temperature of 79.3°F (26.3°C) and a low temperature of 62.6°F (17°C), is generally the warmest month.
What month has the most sunshine?
The month with the most sunshine is July, with an average of 9.8h of sunshine.
What is the least humid month?
With an average relative humidity of 71%, October is the least humid month.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 6min of daylight.
Average temperature
Rockwell, IA
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (22.3°F).
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure
Rockwell, IA
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.88"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:
29.99"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Rockwell, IA
- Average wind speed in January:
10.9mph - Average wind speed in February:
10.8mph - Average wind speed in March:
10.6mph - Average wind speed in April:
10.9mph - Average wind speed in May:
9.4mph - Average wind speed in June:
8.4mph
- Average wind speed in July:
7.3mph - Average wind speed in August:
7.3mph - Average wind speed in September:
8.5mph - Average wind speed in October:
10.1mph - Average wind speed in November:
10.8mph - Average wind speed in December:
10.4mph
The windiest months (with the highest average wind speed) are January and April (10.9mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity
Rockwell, IA
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Rockwell, IA
- Average rainfall in January:
1.06" - Average rainfall in February:
1.42" - Average rainfall in March:
1.69" - Average rainfall in April:
3.07" - Average rainfall in May:
3.78" - Average rainfall in June:
4.65"
The wettest month (with the highest rainfall) is June (4.65").
The driest month (with the least rainfall) is January (1.06").
Average rainfall days
Rockwell, IA
- Average rainfall days in January:
4.5 days - Average rainfall days in February:
3.8 days - Average rainfall days in March:
10.9 days - Average rainfall days in April:
16.3 days - Average rainfall days in May:
19.1 days - Average rainfall days in June:
19.8 days
- Average rainfall days in July:
17.8 days - Average rainfall days in August:
15.8 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
11.6 days - Average rainfall days in November:
8 days - Average rainfall days in December:
5.8 days
The month with the highest number of rainy days is June (19.8 days).
The month with the least rainy days is February (3.8 days).
Average snowfall
Rockwell, IA
- Average snowfall in January:
5.67" - Average snowfall in February:
7.48" - Average snowfall in March:
3.66" - Average snowfall in April:
2.48" - Average snowfall in May:
0.63" - Average snowfall in June:
0"
The month with the highest snowfall is February (7.48").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Rockwell, IA
- Average snowfall days in January:
14.6 days - Average snowfall days in February:
12.9 days - Average snowfall days in March:
8.6 days - Average snowfall days in April:
2.9 days - Average snowfall days in May:
0.4 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:
1.9 days - Average snowfall days in November:
5.6 days - Average snowfall days in December:
13.3 days
The month with the highest number of snowfall days is January (14.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Rockwell, IA
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
3h and 3min - Average sunshine in February:
4h and 0min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 4min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 3min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
Rockwell, IA
- Average sunshine days in January:
14.2 days - Average sunshine days in February:
12.4 days - Average sunshine days in March:
13.4 days - Average sunshine days in April:
11 days - Average sunshine days in May:
9.7 days - Average sunshine days in June:
8 days
- Average sunshine days in July:
9.6 days - Average sunshine days in August:
13 days - Average sunshine days in September:
15.1 days - Average sunshine days in October:
15.5 days - Average sunshine days in November:
17.2 days - Average sunshine days in December:
14.5 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (8 days).
Average UV index
Rockwell, IA
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Rockwell, IA
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
Rockwell, IA
The months with the highest visibility are March, April, May, June, August, September, October and November (6mi).
The months with the lowest visibility are January, February, July and December (5mi).
Rockwell, Iowa, USA
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