Climate and monthly weather forecastRock Rapids, IA
Climate and monthly weather forecast
Weather in January
January, the same as December, in Rock Rapids, Iowa, is a freezing cold winter month, with an average temperature fluctuating between 23°F (-5°C) and 9.5°F (-12.5°C). The coldest period tends to be January, when average temperatures fluctuate between a high of 23°F (-5°C) and a low of 9.5°F (-12.5°C). Weather in January »Weather in February
The last month of the winter, February, is another freezing cold month in Rock Rapids, Iowa, with an average temperature varying between 12.7°F (-10.7°C) and 26.4°F (-3.1°C). Rock Rapids records a slight change with February's average high-temperatures adjusting to a still subzero cold 26.4°F (-3.1°C) from January's 23°F (-5°C). Weather in February »Weather in March
March, the first month of the spring in Rock Rapids, is a chilly month, with an average temperature fluctuating between 43.2°F (6.2°C) and 27.9°F (-2.3°C). As March begins, there is a noticeable increase in the average high-temperature, soaring from a freezing cold 26.4°F (-3.1°C) in February to a frosty 43.2°F (6.2°C). Weather in March »Weather in April
April is a refreshing spring month in Rock Rapids, Iowa, with an average temperature varying between 39.2°F (4°C) and 55.4°F (13°C). The shift from March to April sees an increase in the average high-temperature, transitioning from a chilly 43.2°F (6.2°C) to a refreshing 55.4°F (13°C). Weather in April »Weather in May
May, the last month of the spring in Rock Rapids, is an enjoyable month, with an average temperature fluctuating between 67.6°F (19.8°C) and 50.9°F (10.5°C). Entering May, Rock Rapids sees a temperature rise, with the average high-temperature advancing from April's moderate 55.4°F (13°C) to a comfortable 67.6°F (19.8°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Rock Rapids, Iowa, with an average temperature fluctuating between 77.5°F (25.3°C) and 60.4°F (15.8°C). June indicates a change in the average high-temperature, moving up from a comfortable 67.6°F (19.8°C) in May to a warm 77.5°F (25.3°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Rock Rapids, Iowa, with temperature in the range of an average high of 81.5°F (27.5°C) and an average low of 62.8°F (17.1°C). July brings the highest temperatures, with an average high of 81.5°F (27.5°C) and an average low of 62.8°F (17.1°C). The heat index for July is estimated at a hot 87.8°F (31°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Rock Rapids, Iowa, with an average temperature varying between 59.5°F (15.3°C) and 80.2°F (26.8°C). As August takes its course, Rock Rapids's average high-temperature registers at a still moderately hot 80.2°F (26.8°C), closely aligning with the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Rock Rapids, is still a warm month, with an average temperature fluctuating between 73.9°F (23.3°C) and 53.6°F (12°C). September marks a gentle change in average high-temperature, declining from August's moderately hot 80.2°F (26.8°C) to a still warm 73.9°F (23.3°C). Weather in September »Weather in October
October, the same as September, in Rock Rapids, Iowa, is another mild autumn month, with an average temperature fluctuating between 41.5°F (5.3°C) and 57.4°F (14.1°C). October brings a significant decrease in the average high-temperature, moving down from a warm 73.9°F (23.3°C) in September to a mild 57.4°F (14.1°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Rock Rapids, Iowa, with temperature in the range of an average low of 29.7°F (-1.3°C) and an average high of 43.2°F (6.2°C). November brings a minor decrease, with the average high-temperature reducing from a mild 57.4°F (14.1°C) in October to a chilly 43.2°F (6.2°C). Weather in November »Weather in December
The first month of the winter, December, is still a freezing cold month in Rock Rapids, Iowa, with an average temperature fluctuating between 27.3°F (-2.6°C) and 15.8°F (-9°C). Rock Rapids's weather in December is marked by a clear decrease in the average high-temperature, moving down from November's frosty 43.2°F (6.2°C) to a freezing cold 27.3°F (-2.6°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
Rock Rapids, Iowa, witnesses the coldest weather in January, with temperatures averaging a high of 23°F (-5°C) and a low of 9.5°F (-12.5°C).
January is the most humid month, with an average relative humidity of 88%.
The month with the least rainfall in Rock Rapids is January, when the rain falls for 3.4 days and typically collects 0.71" (18mm) of precipitation.
In Rock Rapids, during the entire year, the rain falls for 119.2 days and collects up to 22.13" (562mm) of precipitation.
Months with snowfall in Rock Rapids are January through May, October through December.
Throughout the year, in Rock Rapids, Iowa, there are 48.3 snowfall days, and 19.29" (490mm) of snow is accumulated.
With an average of 4h of sunshine, January has the least sunshine of the year.
January is the month with the lowest UV index in Rock Rapids, Iowa, with an average maximum UV index of 1.
The month with the most snowfall in Rock Rapids, Iowa, is February, when snow falls for 8.8 days and typically aggregates up to 4.61" (117mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Rock Rapids, Iowa, 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.
The month with the most rainfall in Rock Rapids is June, when the rain falls for 17.3 days and typically aggregates up to 3.43" (87mm) of precipitation.
June through September are months without snowfall in Rock Rapids.
With an average of 15h and 24min of daylight, June has the longest days of the year.
June and July, with an average maximum UV index of 6, are months with the highest UV index in Rock Rapids, Iowa.
July, with its average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 62.8°F (17.1°C), holds the record as the warmest month in Rock Rapids.
July has the most sunshine of the year in Rock Rapids, with an average of 10.5h of sunshine.
October is the least humid month, with an average relative humidity of 67%.
December has the shortest days of the year, with an average of 9h and 0min of daylight.
Average temperature
Rock Rapids, IA
The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (23°F).
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (9.5°F).
Average pressure
Rock Rapids, IA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.15"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.86"Hg
- Average pressure in July:
29.94"Hg - Average pressure in August:
29.94"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed
Rock Rapids, IA
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.7mph - Average wind speed in April:
11.2mph - Average wind speed in May:
9.8mph - Average wind speed in June:
8.9mph
- Average wind speed in July:
7.8mph - Average wind speed in August:
8mph - Average wind speed in September:
9.3mph - Average wind speed in October:
10.3mph - Average wind speed in November:
10.4mph - Average wind speed in December:
10.1mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity
Rock Rapids, IA
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (67%).
Average rainfall
Rock Rapids, IA
- Average rainfall in January:
0.71" - Average rainfall in February:
0.83" - Average rainfall in March:
1.57" - Average rainfall in April:
2.36" - Average rainfall in May:
2.83" - Average rainfall in June:
3.43"
- Average rainfall in July:
2.13" - Average rainfall in August:
2.17" - Average rainfall in September:
2.09" - Average rainfall in October:
2.13" - Average rainfall in November:
0.75" - Average rainfall in December:
1.14"
The wettest month (with the highest rainfall) is June (3.43").
The driest month (with the least rainfall) is January (0.71").
Average rainfall days
Rock Rapids, IA
- Average rainfall days in January:
3.4 days - Average rainfall days in February:
2.7 days - Average rainfall days in March:
9.1 days - Average rainfall days in April:
13.1 days - Average rainfall days in May:
16 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
13.8 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
11.3 days - Average rainfall days in October:
9.3 days - Average rainfall days in November:
5.4 days - Average rainfall days in December:
4.5 days
The month with the highest number of rainy days is June (17.3 days).
The month with the least rainy days is February (2.7 days).
Average snowfall
Rock Rapids, IA
- Average snowfall in January:
3.46" - Average snowfall in February:
4.61" - Average snowfall in March:
3.23" - Average snowfall in April:
1.81" - Average snowfall in May:
0.24" - Average snowfall in June:
0"
The month with the highest snowfall is February (4.61").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Rock Rapids, IA
- Average snowfall days in January:
11.3 days - Average snowfall days in February:
8.8 days - Average snowfall days in March:
7.1 days - Average snowfall days in April:
3 days - Average snowfall days in May:
0.3 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:
1.5 days - Average snowfall days in November:
4.7 days - Average snowfall days in December:
11.6 days
The month with the highest number of snowfall days is December (11.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Rock Rapids, IA
- Average daylight in January:
9h and 24min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 30min - Average daylight in May:
14h and 42min - Average daylight in June:
15h and 24min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 42min - Average daylight in December:
9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
5h and 0min - Average sunshine in March:
6h and 6min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
9h and 48min - Average sunshine in September:
8h and 54min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 30min - Average sunshine in December:
4h and 18min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Rock Rapids, IA
- Average sunshine days in January:
18.9 days - Average sunshine days in February:
16.9 days - Average sunshine days in March:
15.1 days - Average sunshine days in April:
13 days - Average sunshine days in May:
13.6 days - Average sunshine days in June:
10.1 days
- Average sunshine days in July:
14.5 days - Average sunshine days in August:
15.1 days - Average sunshine days in September:
17 days - Average sunshine days in October:
19.1 days - Average sunshine days in November:
20.1 days - Average sunshine days in December:
17.5 days
The month with the most sunshine days is November (20.1 days).
The month with the least sunshine days is June (10.1 days).
Average UV index
Rock Rapids, IA
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Rock Rapids, IA
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility
Rock Rapids, IA
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
