Climate and monthly weather forecast
Ralston, IA

Weather in January

January, like December, is another subzero cold winter month in Ralston, Iowa, with an average temperature ranging between max 26.2°F (-3.2°C) and min 13.6°F (-10.2°C). With an average high-temperature of 26.2°F (-3.2°C) and an average low-temperature of 13.6°F (-10.2°C), January is the coldest month. Weather in January »

Weather in February

The last month of the winter, February, is another freezing cold month in Ralston, Iowa, with an average temperature fluctuating between 16.9°F (-8.4°C) and 30.2°F (-1°C). In February, the average high-temperature is relatively the same as in January - a still subzero cold 30.2°F (-1°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Ralston, Iowa, with an average temperature varying between 31.1°F (-0.5°C) and 45.7°F (7.6°C). In March, the average high-temperature soars, from a subzero cold 30.2°F (-1°C) in February, to a chilly 45.7°F (7.6°C). Weather in March »

Weather in April

April in Ralston, Iowa, is a moderate spring month, with temperature in the range of an average low of 41.9°F (5.5°C) and an average high of 58.5°F (14.7°C). In April, the average high-temperature increases from a frosty 45.7°F (7.6°C) in March to a mild 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 an average temperature ranging between max 69.1°F (20.6°C) and min 52.9°F (11.6°C). In Ralston, the average high-temperature in May rises from a moderate 58.5°F (14.7°C) in April to an agreeable 69.1°F (20.6°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Ralston, Iowa, with an average temperature ranging between max 79.3°F (26.3°C) and min 62.8°F (17.1°C). In June, the average high-temperature rises from a pleasant 69.1°F (20.6°C) in May to a moderately hot 79.3°F (26.3°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Ralston, Iowa, with an average temperature ranging between max 81.5°F (27.5°C) and min 64.4°F (18°C). July is the warmest month, with an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 64.4°F (18°C). In July, the average heat index is computed to be a tropical 87.8°F (31°C). Weather in July »

Weather in August

August, the last month of the summer in Ralston, is also a moderately hot month, with temperature in the range of an average low of 61.5°F (16.4°C) and an average high of 79.5°F (26.4°C). In Ralston, the average high-temperature in August is practically the same as in July - a still moderately hot 79.5°F (26.4°C). Weather in August »

Weather in September

September, the first month of the autumn in Ralston, is also a moderately hot month, with an average temperature fluctuating between 55.8°F (13.2°C) and 74.7°F (23.7°C). In September, the average high-temperature is relatively the same as in August - a still moderately hot 74.7°F (23.7°C). Weather in September »

Weather in October

October, like September, is another mild autumn month in Ralston, Iowa, with an average temperature fluctuating between 59.5°F (15.3°C) and 43.9°F (6.6°C). In Ralston, Iowa, the average high-temperature in October plummets from a moderately hot 74.7°F (23.7°C) in September to a moderate 59.5°F (15.3°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Ralston, Iowa, with temperature in the range of an average low of 31.8°F (-0.1°C) and an average high of 45.9°F (7.7°C). In Ralston, the average high-temperature in November drops 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 still a freezing 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). In December, the average high-temperature drops from a chilly 45.9°F (7.7°C) in November to a subzero cold 31.8°F (-0.1°C). Weather in December »
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FAQ

What is the coldest month in Ralston?

With an average high-temperature of 26.2°F (-3.2°C) and an average low-temperature of 13.6°F (-10.2°C), January is the coldest month in Ralston, Iowa.

What is the most humid month in Ralston?

The most humid month is January, with an average relative humidity of 84%.

What is the driest month in Ralston?

January is the month with the least rainfall in Ralston, Iowa. Rain falls for 4.6 days and accumulates 0.94" (24mm) of precipitation.

How much does it rain in Ralston?

In Ralston, during the entire year, the rain falls for 130.1 days and collects up to 27.28" (693mm) of precipitation.

When does it snow in Ralston?

January through May, October through December are months with snowfall in Ralston, Iowa.

How many days does it snow in Ralston?

Throughout the year, in Ralston, Iowa, there are 44.8 snowfall days, and 19.8" (503mm) of snow is accumulated.

What is the month with the least sunshine in Ralston?

The month with the least sunshine is January, with an average of 4.2h of sunshine.

What is the snowiest month in Ralston?

The month with the most snowfall in Ralston, Iowa, 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 in Ralston?

With an average maximum UV index of 1, February is the month with the lowest UV index.

When is Daylight Saving Time (DST) in Ralston?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from CDT to CST.

What is the least humid month in Ralston?

The months with the lowest humidity in Ralston are April and October, with an average relative humidity of 69%.

What is the rainiest month in Ralston?

May is the month with the most rainfall. Rain falls for 17.3 days and accumulates 4.29" (109mm) of precipitation.

When it does not snow in Ralston?

In Ralston, Iowa, snow does not fall in June through September.

When are the longest days in Ralston?

With an average of 15h and 11min of daylight, June has the longest days of the year in Ralston, Iowa.

What is the month with the highest UV index in Ralston?

June and July, with an average maximum UV index of 6, are months with the highest UV index in Ralston, Iowa.

What is the warmest month in Ralston?

With an average high-temperature of 81.5°F (27.5°C) and an average low-temperature of 64.4°F (18°C), July is the warmest month.

What month has the most sunshine in Ralston?

The month with the most sunshine is July, with an average of 10.4h of sunshine.

What is the month with the shortest days in Ralston?

With an average of 9h and 10min of daylight, December has the shortest days of the year.

Average temperature
Ralston, IA

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).

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Average pressure
Ralston, IA

Average pressure - Ralston, IA

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

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Average wind speed
Ralston, IA

Average wind speed - Ralston, IA

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).

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Average humidity
Ralston, IA

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%).

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Average rainfall
Ralston, IA

Average rainfall - Ralston, IA

The wettest month (with the highest rainfall) is May (4.29").
The driest month (with the least rainfall) is January (0.94").

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Average rainfall days
Ralston, IA

Average rainfall days - Ralston, IA

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).

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Average snowfall
Ralston, IA

Average snowfall - Ralston, IA

The month with the highest snowfall is February (5.12").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days
Ralston, IA

Average snowfall days - Ralston, IA

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).

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Average daylight / Average sunshine
Ralston, IA

Average daylight / Average sunshine - Ralston, IA

The month with the longest days is June (Average daylight: 15h and 11min).
The month with the shortest days is December (Average daylight: 9h and 10min).

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).

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Average sunshine days
Ralston, IA

Average sunshine days - Ralston, IA

The month with the most sunshine days is November (18.9 days).
The month with the least sunshine days is June (10 days).

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Average visibility
Ralston, IA

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).

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