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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 Thornburg, Iowa, with temperature in the range of an average low of 15.6°F (-9.1°C) and an average high of 28.6°F (-1.9°C). The month of January sees the lowest average temperatures, reaching 28.6°F (-1.9°C) at the peak and 15.6°F (-9.1°C) at the low. Weather in January »
Weather in February
The last month of the winter, February, is a wintry month in Thornburg, Iowa, with temperature in the range of an average high of 32.5°F (0.3°C) and an average low of 19°F (-7.2°C). Thornburg records an average high-temperature of a wintry 32.5°F (0.3°C) in February, maintaining a close correlation with January's 28.6°F (-1.9°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Thornburg, Iowa, with temperature in the range of an average high of 47.1°F (8.4°C) and an average low of 32.4°F (0.2°C). Witnessing a clear rise in March, the average high-temperature escalates from February's wintry 32.5°F (0.3°C) to a chilly 47.1°F (8.4°C). Weather in March »
Weather in April
April in Thornburg, Iowa, is a refreshing spring month, with an average temperature ranging between max 59.5°F (15.3°C) and min 42.4°F (5.8°C). The start of April signals an increase in the average high-temperature, moving from a chilly 47.1°F (8.4°C) in March to a moderate 59.5°F (15.3°C). Weather in April »
Weather in May
May, the last month of the spring in Thornburg, is a pleasant month, with an average temperature ranging between max 70°F (21.1°C) and min 53.2°F (11.8°C). The arrival of May brings a change in Thornburg's weather, with average high-temperatures moving from April's refreshing 59.5°F (15.3°C) to a pleasant 70°F (21.1°C). Weather in May »
Weather in June
June, the first month of the summer in Thornburg, is a moderately hot month, with an average temperature varying between 63.1°F (17.3°C) and 79.3°F (26.3°C). June sees a temperature increase, moving from an agreeable 70°F (21.1°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 another warm summer month in Thornburg, Iowa, with an average temperature varying between 82°F (27.8°C) and 65.1°F (18.4°C). July, recording an average high temperature of 82°F (27.8°C) and a low temperature of 65.1°F (18.4°C), is Thornburg's warmest month. The heat index value during July is calculated to be a tropical 89.6°F (32°C). Weather in July »
Weather in August
August, the last month of the summer in Thornburg, is also a moderately hot month, with an average temperature fluctuating between 81.1°F (27.3°C) and 62.8°F (17.1°C). Thornburg marks the start of August with an average high-temperature of a still warm 81.1°F (27.3°C), hinting at a slight fluctuation from July's 82°F (27.8°C). Weather in August »
Weather in September
September, the first month of the autumn in Thornburg, is still a warm month, with temperature in the range of an average low of 56.3°F (13.5°C) and an average high of 75.2°F (24°C). September signifies a minor drop in average high-temperature, transitioning from 81.1°F (27.3°C) in August to a still moderately hot 75.2°F (24°C). Weather in September »
Weather in October
October, like September, in Thornburg, Iowa, is another comfortable autumn month, with an average temperature varying between 44.8°F (7.1°C) and 61.3°F (16.3°C). Thornburg's October weather shows a moderate shift in high-temperatures, falling from September's warm 75.2°F (24°C) to an enjoyable 61.3°F (16.3°C). Weather in October »
Weather in November
November, the last month of the autumn in Thornburg, is also a frosty month, with an average temperature varying between 46.9°F (8.3°C) and 33.4°F (0.8°C). Thornburg's transition into November is marked by a clear temperature shift, receding from a comfortable 61.3°F (16.3°C) in October to a chilly 46.9°F (8.3°C). Weather in November »
Weather in December
December, the first month of the winter in Thornburg, is still a cold month, with an average temperature varying between 23.4°F (-4.8°C) and 34.7°F (1.5°C). The beginning of December marks a decrease in the average high-temperature, transitioning from a frosty 46.9°F (8.3°C) in November to an icy 34.7°F (1.5°C). Weather in December »
Updated: Jul 17, 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?
Thornburg's temperature records reveal January as the coldest month, marked by average highs of 28.6°F (-1.9°C) and lows of 15.6°F (-9.1°C).
How many days does it rain?
Throughout the year, there are 137.9 rainfall days, and 27.76" (705mm) of precipitation is accumulated.
When does it snow?
January through May, October through December are months with snowfall.
When does it snow the most?
The month with the most snowfall is January, when snow falls for 9.5 days and typically aggregates up to 4.06" (103mm) of snow.
How many days does it snow?
In Thornburg, during the entire year, snow falls for 32.8 days and aggregates up to 12.56" (319mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 4.2h of sunshine.
When is the lowest UV index?
The months with the lowest UV index in Thornburg are January, February, October through December, with an average maximum UV index of 2.
What is the driest month?
February is the month with the least rainfall. Rain falls for 4.9 days and accumulates 0.98" (25mm) of precipitation.
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 is the rainiest month?
May is the month with the most rainfall. Rain falls for 17.7 days and accumulates 4.17" (106mm) of precipitation.
When it does not snow?
June through September are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 6min of daylight.
What are the months with the highest UV index?
The months with the highest UV index are June and July, with an average maximum UV index of 6.
What part of the year is the hottest?
July is Thornburg's warmest month, registering average high temperatures of 82°F (27.8°C) and lows of 65.1°F (18.4°C).
What is the most humid month in Thornburg?
The most humid month is July, with an average relative humidity of 83%.
What month has the most sunshine?
July has the most sunshine of the year, with an average of 10.3h of sunshine.
What is the least humid month?
The least humid month is October, with an average relative humidity of 72%.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 12min of daylight.
Average temperature
Thornburg, IA
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (28.6°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 (15.6°F).
Average pressure
Thornburg, IA
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed
Thornburg, IA
- Average wind speed in January:
10.7mph - Average wind speed in February:
10.5mph - Average wind speed in March:
10.5mph - Average wind speed in April:
10.6mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
7mph - Average wind speed in August:
6.9mph - Average wind speed in September:
8mph - Average wind speed in October:
9.6mph - Average wind speed in November:
10.4mph - Average wind speed in December:
10.1mph
The windiest month (with the highest average wind speed) is January (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity
Thornburg, IA
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Thornburg, IA
- Average rainfall in January:
1.06" - Average rainfall in February:
0.98" - Average rainfall in March:
1.97" - Average rainfall in April:
2.87" - Average rainfall in May:
4.17" - Average rainfall in June:
4.02"
- Average rainfall in July:
2.76" - Average rainfall in August:
2.24" - Average rainfall in September:
2.76" - Average rainfall in October:
2.2" - Average rainfall in November:
1.54" - Average rainfall in December:
1.18"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days
Thornburg, IA
- Average rainfall days in January:
5.8 days - Average rainfall days in February:
4.9 days - Average rainfall days in March:
11 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
17.7 days - Average rainfall days in June:
17.2 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
12.3 days - Average rainfall days in September:
12.1 days - Average rainfall days in October:
11.3 days - Average rainfall days in November:
8.3 days - Average rainfall days in December:
6.8 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (4.9 days).
Average snowfall
Thornburg, IA
- Average snowfall in January:
4.06" - Average snowfall in February:
3.66" - Average snowfall in March:
1.34" - Average snowfall in April:
0.79" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is January (4.06").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Thornburg, IA
- Average snowfall days in January:
9.5 days - Average snowfall days in February:
8.4 days - Average snowfall days in March:
4.6 days - Average snowfall days in April:
0.8 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:
0.5 days - Average snowfall days in November:
2.4 days - Average snowfall days in December:
6.5 days
The month with the highest number of snowfall days is January (9.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Thornburg, 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 1min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 0min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days
Thornburg, IA
- Average sunshine days in January:
16.6 days - Average sunshine days in February:
15.6 days - Average sunshine days in March:
15.3 days - Average sunshine days in April:
12.5 days - Average sunshine days in May:
11 days - Average sunshine days in June:
10.3 days
- Average sunshine days in July:
11.9 days - Average sunshine days in August:
15.5 days - Average sunshine days in September:
15.9 days - Average sunshine days in October:
17.9 days - Average sunshine days in November:
18.7 days - Average sunshine days in December:
19.1 days
The month with the most sunshine days is December (19.1 days).
The month with the least sunshine days is June (10.3 days).
Average UV index
Thornburg, IA
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover
Thornburg, IA
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are August and September (Cloud cover 29).
Average visibility
Thornburg, IA
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Thornburg, Iowa, USA
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