Climate and monthly weather forecast
Sidney, IA

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Weather in January

January, like December, is a freezing cold winter month in Sidney, Iowa, with an average temperature varying between 18°F (-7.8°C) and 31.3°F (-0.4°C). In Sidney, January is the coldest month, with temperatures averaging 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 Sidney, is a cold month, with an average temperature fluctuating between 20.8°F (-6.2°C) and 35.2°F (1.8°C). As Sidney welcomes February, the average high-temperature is noted at a wintry 35.2°F (1.8°C), closely aligning with the preceding month. Weather in February »

Weather in March

March, the first month of the spring in Sidney, is a cool month, with an average temperature varying between 34.2°F (1.2°C) and 50.5°F (10.3°C). The shift from February to March is characterized by a clear increase in the average high-temperature, escalating from an icy 35.2°F (1.8°C) to a cool 50.5°F (10.3°C). Weather in March »

Weather in April

April in Sidney, Iowa, is a refreshing spring month, with temperature in the range of an average low of 44.1°F (6.7°C) and an average high of 61.7°F (16.5°C). April sees a temperature increase, 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 Sidney, is an agreeable month, with an average temperature ranging between min 54.5°F (12.5°C) and max 71.8°F (22.1°C). The onset of May brings a rise in the average high-temperature, elevating from a refreshing 61.7°F (16.5°C) in April to an agreeable 71.8°F (22.1°C). Weather in May »

Weather in June

June, the first month of the summer in Sidney, is a moderately hot month, with an average temperature ranging between min 64.8°F (18.2°C) and max 81.9°F (27.7°C). June comes with an increase, with the average high-temperature moving from a pleasant 71.8°F (22.1°C) in May to a warm 81.9°F (27.7°C). Weather in June »

Weather in July

July, the same as June, is a moderately hot summer month in Sidney, Iowa, with an average temperature ranging between max 84°F (28.9°C) and min 66.7°F (19.3°C). July stands out as Sidney's warmest month, with temperatures ranging between an average high of 84°F (28.9°C) and a low of 66.7°F (19.3°C). For most parts of July, the heat index is estimated at a tropical 93.2°F (34°C). Weather in July »

Weather in August

August, the last month of the summer in Sidney, is another warm month, with temperature in the range of an average high of 82.2°F (27.9°C) and an average low of 63.7°F (17.6°C). August denotes a minimal variation in the average high-temperature to a still moderately hot 82.2°F (27.9°C) from July's 84°F (28.9°C). Weather in August »

Weather in September

September, the first month of the autumn in Sidney, is still a warm month, with an average temperature fluctuating between 76.8°F (24.9°C) and 57.7°F (14.3°C). September witnesses a gentle descent in average high-temperature, descending from August's 82.2°F (27.9°C) to a still warm 76.8°F (24.9°C). Weather in September »

Weather in October

October, the same as September, is another refreshing autumn month in Sidney, Iowa, 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). The transition into October involves a decrease in the average high-temperature, falling from a moderately hot 76.8°F (24.9°C) in September to an enjoyable 62.8°F (17.1°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Sidney, Iowa, with an average temperature fluctuating between 34.3°F (1.3°C) and 49.3°F (9.6°C). Start of November brings a shift in the average high-temperature, falling from October's comfortable 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 Sidney, is also an icy month, with an average temperature varying between 35.2°F (1.8°C) and 23°F (-5°C). Onset of December witnesses a reduction 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: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are the coldest months?

January is the month that records the lowest temperatures, with averages ranging from a high of 31.3°F (-0.4°C) to a low of 18°F (-7.8°C).

What are the most humid months?

The months with the highest humidity are January and July, with an average relative humidity of 79%.

How many days does it rain?

Throughout the year, there are 125.6 rainfall days, and 26.14" (664mm) of precipitation is accumulated.

When does it snow?

Months with snowfall are January through April, October through December.

What is the snowiest month?

January is the month with the most snowfall. Snow falls for 8.6 days and accumulates 3.11" (79mm) of snow.

How much does it snow?

In Sidney, during the entire year, snow falls for 29.3 days and aggregates up to 10.71" (272mm) of snow.

What is the month with the least sunshine?

January has the least sunshine of the year, with an average of 4.7h of sunshine.

What are the months with the lowest UV index?

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?

The month with the least rainfall is February, when the rain falls for 3.9 days and typically collects 0.71" (18mm) of precipitation.

When is Daylight Saving Time (DST) in Sidney?

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.

When it does not snow?

May through September are months without snowfall.

What is the rainiest month?

June is the month with the most rainfall. Rain falls for 15.8 days and accumulates 4.29" (109mm) of precipitation.

When are the longest days?

With an average of 15h and 0min of daylight, June has the longest days of the year.

What is the month with the highest UV index?

The months with the highest UV index are June through August, with an average maximum UV index of 6.

What is the warmest month?

Sidney's July weather, with an average high temperature of 84°F (28.9°C) and an average low temperature of 66.7°F (19.3°C), tends to be the warmest of the year.

What month has the most sunshine?

With an average of 10.5h of sunshine, July has the most sunshine of the year.

What is the least humid month?

The least humid month is October, with an average relative humidity of 67%.

What is the month with the shortest days?

With an average of 9h and 18min of daylight, December has the shortest days of the year in Sidney, Iowa.

Average temperature
Sidney, IA

Average temperature - Sidney, 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
Sidney, IA

Average pressure - Sidney, IA

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
Sidney, IA

Average wind speed - Sidney, IA

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
Sidney, IA

Average humidity - Sidney, 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
Sidney, IA

Average rainfall - Sidney, IA

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
Sidney, IA

Average rainfall days - Sidney, IA

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
Sidney, IA

Average snowfall - Sidney, 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
Sidney, IA

Average snowfall days - Sidney, IA

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
Sidney, IA

Average daylight / Average sunshine - Sidney, IA

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).

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
Sidney, IA

Average sunshine days - Sidney, IA

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
Sidney, IA

Average UV index - Sidney, 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 visibility
Sidney, IA

Average visibility - Sidney, 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).

Sidney, Iowa, USA

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