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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, the same as December, in Shelby, Iowa, is a freezing cold winter month, with an average temperature varying between 15.4°F (-9.2°C) and 28.8°F (-1.8°C). January tends to be the coldest month, with temperatures averaging a daily high of 28.8°F (-1.8°C) and a low of 15.4°F (-9.2°C). Weather in January »
Weather in February
February, the last month of the winter in Shelby, is a cold month, with an average temperature fluctuating between 32.4°F (0.2°C) and 18.5°F (-7.5°C). As Shelby, Iowa, welcomes February, the average high-temperature stabilizes at a wintry 32.4°F (0.2°C), showing little deviation from January's 28.8°F (-1.8°C). Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Shelby, Iowa, with an average temperature ranging between min 32.5°F (0.3°C) and max 48.2°F (9°C). A notable increase in the average high-temperature is observed during March, soaring from a cold 32.4°F (0.2°C) in February to a chilly 48.2°F (9°C). Weather in March »
Weather in April
April in Shelby, Iowa, is a refreshing spring month, with an average temperature fluctuating between 59.9°F (15.5°C) and 42.4°F (5.8°C). The commencement of April sees a shift in the average high-temperature, moving from a chilly 48.2°F (9°C) in March to a moderate 59.9°F (15.5°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Shelby, Iowa, with an average temperature fluctuating between 53.4°F (11.9°C) and 70.3°F (21.3°C). As Shelby enters May, the average high-temperature increases from the a refreshing 59.9°F (15.5°C) of April to a pleasant 70.3°F (21.3°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Shelby, Iowa, with temperature in the range of an average high of 80.1°F (26.7°C) and an average low of 63.3°F (17.4°C). Shelby's transition into June brings a rise in the average high-temperature, moving from a pleasant 70.3°F (21.3°C) in May to a warm 80.1°F (26.7°C). Weather in June »
Weather in July
July, like June, in Shelby, Iowa, is another warm summer month, with an average temperature ranging between min 65.1°F (18.4°C) and max 82.9°F (28.3°C). July is the warmest month, with an average high-temperature of 82.9°F (28.3°C) and an average low-temperature of 65.1°F (18.4°C). The heat index for July is estimated at a hot 91.4°F (33°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Shelby, Iowa, with an average temperature fluctuating between 81.1°F (27.3°C) and 62.2°F (16.8°C). Upon the beginning of August, Shelby's high-temperatures register at a still warm 81.1°F (27.3°C), closely mirroring the preceding month. Weather in August »
Weather in September
September, the first month of the autumn in Shelby, is still a warm month, with an average temperature fluctuating between 55.9°F (13.3°C) and 75.6°F (24.2°C). As August transitions into September, Shelby sees a gentle drop in the average high-temperature, transitioning from a moderately hot 81.1°F (27.3°C) to a still warm 75.6°F (24.2°C). Weather in September »
Weather in October
October, like September, in Shelby, Iowa, is another comfortable autumn month, with an average temperature fluctuating between 44.8°F (7.1°C) and 61°F (16.1°C). The arrival of October brings a significant change in Shelby's weather, with average high-temperatures dropping from September's warm 75.6°F (24.2°C) to an enjoyable 61°F (16.1°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Shelby, Iowa, with an average temperature ranging between min 32.9°F (0.5°C) and max 47.3°F (8.5°C). Onset of November witnesses a reduction in the average high-temperature, falling from an enjoyable 61°F (16.1°C) in October to a chilly 47.3°F (8.5°C). Weather in November »
Weather in December
December, the first month of the winter in Shelby, is also a wintry month, with temperature in the range of an average high of 33.4°F (0.8°C) and an average low of 21.4°F (-5.9°C). A decrease in the average high-temperature is observed during December, shifting from a frosty 47.3°F (8.5°C) in November to a cold 33.4°F (0.8°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 is the coldest month in Shelby?
January is the coldest month, with the temperature often reaching an average high of 28.8°F (-1.8°C) and an average low of 15.4°F (-9.2°C).
What is the most humid month in Shelby?
The most humid month in Shelby is January, with an average relative humidity of 82%.
What is the driest month in Shelby?
January is the month with the least rainfall. Rain falls for 5.1 days and accumulates 0.87" (22mm) of precipitation.
How many days does it rain in Shelby?
Throughout the year, in Shelby, there are 127.7 rainfall days, and 26.57" (675mm) of precipitation is accumulated.
When does it snow in Shelby?
Months with snowfall in Shelby are January through May, October through December.
How much does it snow in Shelby?
Throughout the year, there are 35.8 snowfall days, and 13.82" (351mm) of snow is accumulated.
What is the month with the least sunshine in Shelby?
The month with the least sunshine in Shelby is January, with an average of 4.6h of sunshine.
What are the months with the lowest UV index in Shelby?
The months with the lowest UV index in Shelby are January, February, October through December, with an average maximum UV index of 2.
When does it snow the most in Shelby?
February is the month with the most snowfall in Shelby. Snow falls for 8.3 days and accumulates 3.7" (94mm) of snow.
When is Daylight Saving Time (DST) in Shelby?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Shelby, 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 is the rainiest month in Shelby?
June is the month with the most rainfall. Rain falls for 16.9 days and accumulates 4.37" (111mm) of precipitation.
When it does not snow in Shelby?
June through September are months without snowfall in Shelby.
When are the longest days in Shelby?
With an average of 15h and 6min of daylight, June has the longest days of the year in Shelby.
What is the month with the highest UV index in Shelby?
The months with the highest UV index in Shelby are June through August, with an average maximum UV index of 6.
What is the warmest month in Shelby?
Shelby's July weather reaches an average high of 82.9°F (28.3°C) and an average low of 65.1°F (18.4°C), making it the warmest month.
What month has the most sunshine in Shelby?
July has the most sunshine of the year in Shelby, Iowa, with an average of 10.4h of sunshine.
What is the least humid month in Shelby?
With an average relative humidity of 68%, October is the least humid month in Shelby, Iowa.
What is the month with the shortest days in Shelby?
With an average of 9h and 12min of daylight, December has the shortest days of the year in Shelby, Iowa.
Average temperature
Shelby, IA
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is January (28.8°F).
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).
Average pressure
Shelby, IA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.92"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:
29.96"Hg - Average pressure in September:
30"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.08"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 (29.87"Hg).
Average wind speed
Shelby, IA
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.4mph - Average wind speed in March:
10.6mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9.1mph - Average wind speed in June:
8.4mph
- Average wind speed in July:
7mph - Average wind speed in August:
7.3mph - Average wind speed in September:
8.4mph - Average wind speed in October:
9.5mph - Average wind speed in November:
10.3mph - Average wind speed in December:
9.9mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity
Shelby, IA
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (68%).
Average rainfall
Shelby, IA
- Average rainfall in January:
0.87" - Average rainfall in February:
0.98" - Average rainfall in March:
1.73" - Average rainfall in April:
2.4" - Average rainfall in May:
4.06" - Average rainfall in June:
4.37"
The wettest month (with the highest rainfall) is June (4.37").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days
Shelby, IA
- Average rainfall days in January:
5.1 days - Average rainfall days in February:
3.6 days - Average rainfall days in March:
10.2 days - Average rainfall days in April:
14.2 days - Average rainfall days in May:
17.1 days - Average rainfall days in June:
16.9 days
- Average rainfall days in July:
13.5 days - Average rainfall days in August:
13.7 days - Average rainfall days in September:
11.8 days - Average rainfall days in October:
10 days - Average rainfall days in November:
6.4 days - Average rainfall days in December:
5.2 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is February (3.6 days).
Average snowfall
Shelby, IA
- Average snowfall in January:
3.62" - Average snowfall in February:
3.7" - Average snowfall in March:
1.93" - Average snowfall in April:
0.91" - Average snowfall in May:
0.16" - Average snowfall in June:
0"
The month with the highest snowfall is February (3.7").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Shelby, IA
- Average snowfall days in January:
9.8 days - Average snowfall days in February:
8.3 days - Average snowfall days in March:
4.5 days - Average snowfall days in April:
1.3 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:
0.6 days - Average snowfall days in November:
2.5 days - Average snowfall days in December:
8.5 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Shelby, 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 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 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
5h and 2min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 1min - Average sunshine in May:
8h and 5min - Average sunshine in June:
9h and 5min
- 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 5min - Average sunshine in November:
5h and 5min - 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 36min).
Average sunshine days
Shelby, IA
- Average sunshine days in January:
17.8 days - Average sunshine days in February:
15.7 days - Average sunshine days in March:
16.4 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
11.7 days - Average sunshine days in June:
11 days
- Average sunshine days in July:
13.9 days - Average sunshine days in August:
14.8 days - Average sunshine days in September:
16.3 days - Average sunshine days in October:
19.5 days - Average sunshine days in November:
20.5 days - Average sunshine days in December:
18.7 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (11 days).
Average UV index
Shelby, 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, October, November and December (UV index 2).
Average cloud cover
Shelby, IA
The month with the most cloud cover is January (Cloud cover 51).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility
Shelby, 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).
Shelby, Iowa, USA
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