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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 another subzero cold winter month in Ralston, Iowa, with temperature in the range of an average low of 13.6°F (-10.2°C) and an average high of 26.2°F (-3.2°C). January, with its average high-temperature of 26.2°F (-3.2°C) and an average low-temperature of 13.6°F (-10.2°C), holds the record as the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Ralston, is another freezing cold month, with temperature in the range of an average high of 30.2°F (-1°C) and an average low of 16.9°F (-8.4°C). February's weather records an average high-temperature of a still subzero cold 30.2°F (-1°C), showing little deviation from January. Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Ralston, Iowa, with temperature in the range of an average low of 31.1°F (-0.5°C) and an average high of 45.7°F (7.6°C). March's arrival is marked by a notable elevation in high-temperatures, rising from a freezing cold 30.2°F (-1°C) in February to a chilly 45.7°F (7.6°C). Weather in March »
Weather in April
April is a refreshing spring month in Ralston, Iowa, with temperature in the range of an average high of 58.5°F (14.7°C) and an average low of 41.9°F (5.5°C). The average high-temperature increases in April, moving from a chilly 45.7°F (7.6°C) in March to a refreshing 58.5°F (14.7°C). Weather in April »
Weather in May
May, the last month of the spring in Ralston, is a pleasant month, with temperature in the range of an average low of 52.9°F (11.6°C) and an average high of 69.1°F (20.6°C). In Ralston, stepping into May brings a temperature increase, moving up from April's mild 58.5°F (14.7°C) to an agreeable 69.1°F (20.6°C). Weather in May »
Weather in June
June, the first month of the summer in Ralston, is a moderately hot month, with an average temperature varying between 79.3°F (26.3°C) and 62.8°F (17.1°C). The average high-temperature increases in June, moving from an agreeable 69.1°F (20.6°C) in May to a warm 79.3°F (26.3°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Ralston, Iowa, with an average temperature fluctuating between 64.4°F (18°C) and 81.5°F (27.5°C). July, having an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 64.4°F (18°C), is the warmest month. For most parts of July, the heat index 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 Ralston, Iowa, with temperature in the range of an average high of 79.5°F (26.4°C) and an average low of 61.5°F (16.4°C). As August unfolds, the average high-temperature reaches a still moderately hot 79.5°F (26.4°C), hinting at a slight fluctuation from the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Ralston, Iowa, with an average temperature varying between 55.8°F (13.2°C) and 74.7°F (23.7°C). A minimal variation is noted in Ralston's average high-temperature at the onset of September, reaching a still warm 74.7°F (23.7°C) from August's 79.5°F (26.4°C). Weather in September »
Weather in October
October, the same as September, in Ralston, Iowa, is a moderate autumn month, with an average temperature ranging between min 43.9°F (6.6°C) and max 59.5°F (15.3°C). October indicates a noticeable reduction in the average high-temperature, moving down from a warm 74.7°F (23.7°C) in September to a refreshing 59.5°F (15.3°C). Weather in October »
Weather in November
November, the last month of the autumn in Ralston, is another chilly month, with an average temperature ranging between max 45.9°F (7.7°C) and min 31.8°F (-0.1°C). The onset of November coincides with a reduction in the average high-temperature, falling from a mild 59.5°F (15.3°C) in October to a frosty 45.9°F (7.7°C). Weather in November »
Weather in December
The first month of the winter, December, is also a subzero cold month in Ralston, Iowa, with an average temperature ranging between max 31.8°F (-0.1°C) and min 20.8°F (-6.2°C). The commencement of December involves a temperature shift, with the average high-temperature dropping from a frosty 45.9°F (7.7°C) in November to a freezing cold 31.8°F (-0.1°C). Weather in December »
Updated: Jun 28, 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?
The coldest time of the year is January, with temperatures averaging a high of 26.2°F (-3.2°C) and a low of 13.6°F (-10.2°C).
What is the most humid month?
The most humid month is January, with an average relative humidity of 84%.
What is the driest month?
January is the month with the least rainfall. Rain falls for 4.6 days and accumulates 0.94" (24mm) of precipitation.
How much does it rain?
Throughout the year, there are 130.1 rainfall days, and 27.28" (693mm) of precipitation is accumulated.
When does it snow?
January through May, October through December are months with snowfall.
How much does it snow?
In Ralston, during the entire year, snow falls for 44.8 days and aggregates up to 19.8" (503mm) of snow.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 4.2h of sunshine.
What is the snowiest month?
The month with the most snowfall is February, when snow falls for 9.4 days and typically aggregates up to 5.12" (130mm) of snow.
What is the month with the lowest UV index?
The month with the lowest UV index is February, with an average maximum UV index of 1.
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 are the least humid months?
The months with the lowest humidity are April and October, with an average relative humidity of 69%.
What is the wettest month?
The month with the most rainfall is May, when the rain falls for 17.3 days and typically aggregates up to 4.29" (109mm) of precipitation.
When it does not snow?
In Ralston, snow does not fall in June through September.
When are the longest days?
June has the longest days of the year, with an average of 15h and 12min of daylight.
When is the highest UV index in Ralston?
The months with the highest UV index are June and July, with an average maximum UV index of 6.
What is the hottest time of year?
July is the month when Ralston's temperatures reach their peak, with averages of 81.5°F (27.5°C) and lows of 64.4°F (18°C).
What month has the most sunshine?
The month with the most sunshine is July, with an average of 10.4h of sunshine.
What is the month with the shortest days?
The month with the shortest days in Ralston, Iowa, is December, with an average of 9h and 12min of daylight.
Average temperature
Ralston, 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 (26.2°F).
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure
Ralston, 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:
29.93"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:
30"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Ralston, IA
- Average wind speed in January:
11.1mph - Average wind speed in February:
10.9mph - Average wind speed in March:
10.7mph - Average wind speed in April:
10.9mph - Average wind speed in May:
9.3mph - Average wind speed in June:
8.5mph
- Average wind speed in July:
7.2mph - Average wind speed in August:
7.4mph - Average wind speed in September:
8.5mph - Average wind speed in October:
9.9mph - Average wind speed in November:
10.7mph - Average wind speed in December:
10.6mph
The windiest month (with the highest average wind speed) is January (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity
Ralston, IA
The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are April and October (69%).
Average rainfall
Ralston, IA
- Average rainfall in January:
0.94" - Average rainfall in February:
1.26" - Average rainfall in March:
1.73" - Average rainfall in April:
2.95" - Average rainfall in May:
4.29" - Average rainfall in June:
3.98"
- Average rainfall in July:
2.17" - Average rainfall in August:
2.32" - Average rainfall in September:
2.72" - Average rainfall in October:
2.13" - Average rainfall in November:
1.14" - Average rainfall in December:
1.65"
The wettest month (with the highest rainfall) is May (4.29").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days
Ralston, IA
- Average rainfall days in January:
4.6 days - Average rainfall days in February:
4.3 days - Average rainfall days in March:
11.6 days - Average rainfall days in April:
15.4 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
17.9 days
- Average rainfall days in July:
14 days - Average rainfall days in August:
12 days - Average rainfall days in September:
10.9 days - Average rainfall days in October:
9.9 days - Average rainfall days in November:
7.2 days - Average rainfall days in December:
5 days
The month with the highest number of rainy days is June (17.9 days).
The month with the least rainy days is February (4.3 days).
Average snowfall
Ralston, IA
- Average snowfall in January:
4.02" - Average snowfall in February:
5.12" - Average snowfall in March:
3.35" - Average snowfall in April:
1.26" - Average snowfall in May:
0.24" - Average snowfall in June:
0"
The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Ralston, IA
- Average snowfall days in January:
11.8 days - Average snowfall days in February:
9.4 days - Average snowfall days in March:
7 days - Average snowfall days in April:
1.7 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:
0.9 days - Average snowfall days in November:
3.8 days - Average snowfall days in December:
9.9 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Ralston, IA
- Average daylight in January:
9h and 3min - 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 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
4h and 5min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
9h and 4min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days
Ralston, IA
- Average sunshine days in January:
16.1 days - Average sunshine days in February:
14.5 days - Average sunshine days in March:
14 days - Average sunshine days in April:
11.5 days - Average sunshine days in May:
11.7 days - Average sunshine days in June:
10 days
- Average sunshine days in July:
14.1 days - Average sunshine days in August:
15.9 days - Average sunshine days in September:
17.2 days - Average sunshine days in October:
18.8 days - Average sunshine days in November:
18.9 days - Average sunshine days in December:
17.4 days
The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is June (10 days).
Average UV index
Ralston, IA
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover
Ralston, IA
The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility
Ralston, IA
The months with the highest visibility are February, March, April, May, June, July, September, October, November and December (6mi).
The months with the lowest visibility are January and August (5mi).
Ralston, Iowa, USA
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