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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 Riverton, Iowa, with an average temperature fluctuating between 31.3°F (-0.4°C) and 18°F (-7.8°C). The coldest period tends to be January, when average temperatures fluctuate between a high of 31.3°F (-0.4°C) and a low of 18°F (-7.8°C). Weather in January »
Weather in February
February, the last month of the winter in Riverton, is an icy month, with an average temperature fluctuating between 20.8°F (-6.2°C) and 35.2°F (1.8°C). Riverton's average high-temperature in February is a cold 35.2°F (1.8°C), indicating a subtle variation from January. Weather in February »
Weather in March
March, the first month of the spring in Riverton, is a fresh month, with an average temperature varying between 34.2°F (1.2°C) and 50.5°F (10.3°C). March's arrival signals a significant increase in average high-temperatures, soaring from February's wintry 35.2°F (1.8°C) to a fresh 50.5°F (10.3°C). Weather in March »
Weather in April
April in Riverton, Iowa, is a refreshing spring month, with an average temperature fluctuating between 44.1°F (6.7°C) and 61.7°F (16.5°C). Riverton's transition into April is marked by a temperature shift, moving from a cool 50.5°F (10.3°C) in March to a comfortable 61.7°F (16.5°C). Weather in April »
Weather in May
May, the last month of the spring in Riverton, is a pleasant month, with temperature in the range of an average high of 71.8°F (22.1°C) and an average low of 54.5°F (12.5°C). The arrival of May brings a change in Riverton's weather, with average high-temperatures moving from April's refreshing 61.7°F (16.5°C) to a pleasant 71.8°F (22.1°C). Weather in May »
Weather in June
June, the first month of the summer in Riverton, is a moderately hot month, with temperature in the range of an average high of 81.9°F (27.7°C) and an average low of 64.8°F (18.2°C). In Riverton, the average high-temperature in June increases from an agreeable 71.8°F (22.1°C) in May to a moderately hot 81.9°F (27.7°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Riverton, Iowa, with an average temperature varying between 66.7°F (19.3°C) and 84°F (28.9°C). The warmest period tends to be July, when average temperatures fluctuate between a high of 84°F (28.9°C) and a low of 66.7°F (19.3°C). In July, the average heat index is estimated at a tropical 93.2°F (34°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Riverton, Iowa, with an average temperature ranging between max 82.2°F (27.9°C) and min 63.7°F (17.6°C). As Riverton steps into August, the average high-temperature is measured at a still warm 82.2°F (27.9°C), displaying minor differences from July's 84°F (28.9°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Riverton, Iowa, with an average temperature ranging between max 76.8°F (24.9°C) and min 57.7°F (14.3°C). September's onset corresponds with a subtle shift in the average high-temperature, slightly moving from 82.2°F (27.9°C) in August to a still moderately hot 76.8°F (24.9°C). Weather in September »
Weather in October
October, like September, in Riverton, Iowa, is another refreshing autumn month, with temperature in the range of an average high of 62.8°F (17.1°C) and an average low of 45.7°F (7.6°C). With the onset of October, Riverton's average high-temperature adjusts, receding from September's warm 76.8°F (24.9°C) to a comfortable 62.8°F (17.1°C). Weather in October »
Weather in November
November, the last month of the autumn in Riverton, is another chilly month, with temperature in the range of an average high of 49.3°F (9.6°C) and an average low of 34.3°F (1.3°C). The shift from October to November involves a decrease in the average high-temperature, from an enjoyable 62.8°F (17.1°C) to a chilly 49.3°F (9.6°C). Weather in November »
Weather in December
December, the first month of the winter in Riverton, is also a wintry month, with an average temperature fluctuating between 23°F (-5°C) and 35.2°F (1.8°C). During the transition into December, Riverton observes a decrease in the average high-temperature, falling from a chilly 49.3°F (9.6°C) in November to a cold 35.2°F (1.8°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
What month is the coldest in Riverton?
With average high temperatures of 31.3°F (-0.4°C) and lows of 18°F (-7.8°C), January is the coldest month in Riverton.
What are the most humid months in Riverton?
January and July, with an average relative humidity of 79%, are most humid months.
How much does it rain in Riverton?
Throughout the year, there are 125.6 rainfall days, and 26.14" (664mm) of precipitation is accumulated.
When does it snow in Riverton?
Months with snowfall in Riverton, Iowa, are January through April, October through December.
When does it snow the most in Riverton?
January is the month with the most snowfall in Riverton. Snow falls for 8.6 days and accumulates 3.11" (79mm) of snow.
How many days does it snow in Riverton?
Throughout the year, in Riverton, there are 29.3 snowfall days, and 10.71" (272mm) of snow is accumulated.
What is the month with the least sunshine in Riverton?
The month with the least sunshine in Riverton, Iowa, is January, with an average of 4.7h of sunshine.
What is the month with the lowest UV index in Riverton?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
What is the driest month in Riverton?
February is the month with the least rainfall in Riverton. Rain falls for 3.9 days and accumulates 0.71" (18mm) of precipitation.
When is Daylight Saving Time (DST) in Riverton?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Riverton, 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 Riverton?
In Riverton, snow does not fall in May through September.
What is the rainiest month in Riverton?
The month with the most rainfall in Riverton, Iowa, is June, when the rain falls for 15.8 days and typically aggregates up to 4.29" (109mm) of precipitation.
When are the longest days in Riverton?
The month with the longest days in Riverton is June, with an average of 15h and 0min of daylight.
What is the month with the highest UV index in Riverton?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What part of the year is the hottest in Riverton?
The month of July, characterized by an average high of 84°F (28.9°C) and a low of 66.7°F (19.3°C), is recognized as the warmest in Riverton, Iowa.
What month has the most sunshine in Riverton?
With an average of 10.5h of sunshine, July has the most sunshine of the year in Riverton.
What is the least humid month in Riverton?
The least humid month is October, with an average relative humidity of 67%.
What is the month with the shortest days in Riverton?
December has the shortest days of the year in Riverton, Iowa, with an average of 9h and 18min of daylight.
Average temperature
Riverton, IA
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (31.3°F).
The month with the highest average low temperature is July (66.7°F).
The coldest month (with the lowest average low temperature) is January (18°F).
Average pressure
Riverton, IA
- Average pressure in January:
30.17"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.91"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.95"Hg - Average pressure in September:
30"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed
Riverton, IA
- Average wind speed in January:
9.8mph - Average wind speed in February:
9.9mph - Average wind speed in March:
10.2mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.6mph - Average wind speed in June:
8.1mph
- Average wind speed in July:
6.7mph - Average wind speed in August:
6.9mph - Average wind speed in September:
8mph - Average wind speed in October:
9.1mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.4mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.7mph).
Average humidity
Riverton, IA
The months with the highest relative humidity are January and July (79%).
The month with the lowest relative humidity is October (67%).
Average rainfall
Riverton, IA
- Average rainfall in January:
0.79" - Average rainfall in February:
0.71" - Average rainfall in March:
1.54" - Average rainfall in April:
2.2" - Average rainfall in May:
4.13" - Average rainfall in June:
4.29"
- Average rainfall in July:
2.56" - Average rainfall in August:
2.6" - Average rainfall in September:
2.32" - Average rainfall in October:
2.56" - Average rainfall in November:
1.18" - Average rainfall in December:
1.26"
The wettest month (with the highest rainfall) is June (4.29").
The driest month (with the least rainfall) is February (0.71").
Average rainfall days
Riverton, IA
- Average rainfall days in January:
4.4 days - Average rainfall days in February:
3.9 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
14.3 days - Average rainfall days in May:
16.3 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
13.5 days - Average rainfall days in August:
12.8 days - Average rainfall days in September:
12.3 days - Average rainfall days in October:
10 days - Average rainfall days in November:
6.7 days - Average rainfall days in December:
5.1 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (3.9 days).
Average snowfall
Riverton, IA
The month with the highest snowfall is January (3.11").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Riverton, IA
- Average snowfall days in January:
8.6 days - Average snowfall days in February:
7.7 days - Average snowfall days in March:
3.6 days - Average snowfall days in April:
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:
0.7 days - Average snowfall days in November:
2 days - Average snowfall days in December:
5.6 days
The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Riverton, IA
- Average daylight in January:
9h and 4min - 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 3min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
5h and 4min - Average sunshine in March:
6h and 4min - Average sunshine in April:
8h and 2min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 5min - Average sunshine in December:
5h and 1min
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 42min).
Average sunshine days
Riverton, IA
- Average sunshine days in January:
19 days - Average sunshine days in February:
17.8 days - Average sunshine days in March:
16.9 days - Average sunshine days in April:
13.6 days - Average sunshine days in May:
12.4 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
14.5 days - Average sunshine days in August:
15.8 days - Average sunshine days in September:
15.8 days - Average sunshine days in October:
18.9 days - Average sunshine days in November:
20.8 days - Average sunshine days in December:
20.6 days
The month with the most sunshine days is November (20.8 days).
The month with the least sunshine days is June (11.8 days).
Average UV index
Riverton, IA
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
Riverton, IA
The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility
Riverton, IA
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).
Riverton, Iowa, USA
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