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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 Treynor, Iowa, is another subzero cold winter month, with an average temperature fluctuating between 16.3°F (-8.7°C) and 29.8°F (-1.2°C). Temperature readings reach their annual highs in January, averaging 29.8°F (-1.2°C) and a minimum average of 16.3°F (-8.7°C). Weather in January »
Weather in February
February, the last month of the winter in Treynor, is an icy month, with temperature in the range of an average high of 33.8°F (1°C) and an average low of 19.8°F (-6.8°C). The transition from January to February sees average high-temperatures adjusting to an icy 33.8°F (1°C), from a not significantly different 29.8°F (-1.2°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Treynor, Iowa, with temperature in the range of an average low of 33.3°F (0.7°C) and an average high of 49.6°F (9.8°C). The onset of March brings a clear temperature shift, with the average high-temperature escalating from an icy 33.8°F (1°C) in February to a chilly 49.6°F (9.8°C). Weather in March »
Weather in April
April is a refreshing spring month in Treynor, Iowa, with an average temperature ranging between min 43.3°F (6.3°C) and max 60.8°F (16°C). With the transition into April, Treynor experiences an increase in average high-temperatures, moving up from a frosty 49.6°F (9.8°C) in March to a refreshing 60.8°F (16°C). Weather in April »
Weather in May
May, the last month of the spring in Treynor, is an agreeable month, with an average temperature ranging between min 53.8°F (12.1°C) and max 70.9°F (21.6°C). With the beginning of May, Treynor's average high-temperature sees an increase, transitioning from a refreshing 60.8°F (16°C) in April to an agreeable 70.9°F (21.6°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Treynor, Iowa, with an average temperature fluctuating between 64.2°F (17.9°C) and 81.1°F (27.3°C). June marks a rise in the average high-temperature, moving from May's pleasant 70.9°F (21.6°C) to a warm 81.1°F (27.3°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Treynor, Iowa, with an average temperature varying between 84°F (28.9°C) and 65.8°F (18.8°C). With average high and low temperatures of 84°F (28.9°C) and 65.8°F (18.8°C) respectively, July is Treynor's warmest month. For most parts of July, the heat index is appraised at a hot 93.2°F (34°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Treynor, Iowa, with an average temperature varying between 63.1°F (17.3°C) and 82°F (27.8°C). As July transitions into August, the average high-temperature rests at a still warm 82°F (27.8°C), maintaining a close resemblance to the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Treynor, Iowa, with an average temperature varying between 76.6°F (24.8°C) and 56.8°F (13.8°C). The shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from a warm 82°F (27.8°C) to a still moderately hot 76.6°F (24.8°C). Weather in September »
Weather in October
October, like September, in Treynor, Iowa, is another enjoyable autumn month, with an average temperature fluctuating between 45°F (7.2°C) and 61.5°F (16.4°C). With the transition into October, Treynor experiences a significant decrease in average high-temperatures, moving down from a moderately hot 76.6°F (24.8°C) in September to a comfortable 61.5°F (16.4°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Treynor, Iowa, with an average temperature fluctuating between 48.2°F (9°C) and 33.3°F (0.7°C). November shows a mild decline in the average high-temperature, falling from October's refreshing 61.5°F (16.4°C) to a frosty 48.2°F (9°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Treynor, Iowa, with temperature in the range of an average low of 21.9°F (-5.6°C) and an average high of 33.6°F (0.9°C). December's arrival signals a significant decrease in average high-temperatures, falling from November's frosty 48.2°F (9°C) to a cold 33.6°F (0.9°C). Weather in December »
Updated: Jul 31, 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 part of the year is the coldest?
The coldest temperatures occur during January, when averages reach a peak of 29.8°F (-1.2°C) and a low of 16.3°F (-8.7°C).
What is the most humid month?
With an average relative humidity of 81%, January is the most humid month.
What is the driest month?
The month with the least rainfall is January, when the rain falls for 4.4 days and typically collects 0.83" (21mm) of precipitation.
How much does it rain in Treynor?
In Treynor, during the entire year, the rain falls for 125.8 days and collects up to 25.35" (644mm) of precipitation.
When does it snow?
January through May, October through December are months with snowfall.
How many days does it snow?
In Treynor, Iowa, during the entire year, snow falls for 33.7 days and aggregates up to 13.07" (332mm) 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.
When is the lowest UV index?
The months with the lowest UV index are January, February, October through December, with an average maximum UV index of 2.
When does it snow the most?
The month with the most snowfall is February, when snow falls for 8.4 days and typically aggregates up to 3.74" (95mm) of snow.
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 in Treynor. Rain falls for 17.5 days and accumulates 4.09" (104mm) 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 through August, with an average maximum UV index of 6.
What are the warmest months?
With average temperatures fluctuating between a high of 84°F (28.9°C) and a low of 65.8°F (18.8°C), July stands out as the warmest month.
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?
With an average relative humidity of 67%, October is the least humid month.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Treynor, IA
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (29.8°F).
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).
Average pressure
Treynor, 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:
29.86"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.95"Hg - Average pressure in September:
29.99"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 (29.86"Hg).
Average wind speed
Treynor, IA
- Average wind speed in January:
10.1mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.6mph - Average wind speed in May:
8.9mph - Average wind speed in June:
8.4mph
- Average wind speed in July:
7mph - Average wind speed in August:
7.2mph - Average wind speed in September:
8.3mph - Average wind speed in October:
9.5mph - Average wind speed in November:
10.1mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity
Treynor, IA
The month with the highest relative humidity is January (81%).
The month with the lowest relative humidity is October (67%).
Average rainfall
Treynor, IA
- Average rainfall in January:
0.83" - Average rainfall in February:
0.87" - Average rainfall in March:
1.5" - Average rainfall in April:
2.13" - Average rainfall in May:
4.09" - Average rainfall in June:
4.06"
- Average rainfall in July:
2.13" - Average rainfall in August:
2.68" - Average rainfall in September:
2.17" - Average rainfall in October:
2.36" - Average rainfall in November:
0.98" - Average rainfall in December:
1.57"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is January (0.83").
Average rainfall days
Treynor, IA
- Average rainfall days in January:
4.4 days - Average rainfall days in February:
4.2 days - Average rainfall days in March:
10.3 days - Average rainfall days in April:
14 days - Average rainfall days in May:
17.5 days - Average rainfall days in June:
15.9 days
- Average rainfall days in July:
12.8 days - Average rainfall days in August:
13.6 days - Average rainfall days in September:
12 days - Average rainfall days in October:
10.3 days - Average rainfall days in November:
5.8 days - Average rainfall days in December:
5 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is February (4.2 days).
Average snowfall
Treynor, IA
- Average snowfall in January:
3.23" - Average snowfall in February:
3.74" - Average snowfall in March:
1.65" - Average snowfall in April:
0.79" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is February (3.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Treynor, IA
- Average snowfall days in January:
9.3 days - Average snowfall days in February:
8.4 days - Average snowfall days in March:
4.2 days - Average snowfall days in April:
1.3 days - Average snowfall days in May:
0.2 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:
0.8 days - Average snowfall days in November:
2.5 days - Average snowfall days in December:
7 days
The month with the highest number of snowfall days is January (9.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Treynor, 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 2min
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 18min).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
5h and 3min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 2min - Average sunshine in May:
8h and 5min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 3min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 1min - Average sunshine in October:
6h and 0min - Average sunshine in November:
5h and 5min - Average sunshine in December:
5h and 0min
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
Treynor, IA
- Average sunshine days in January:
17.3 days - Average sunshine days in February:
16.6 days - Average sunshine days in March:
16.8 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
11.5 days - Average sunshine days in June:
11.3 days
- Average sunshine days in July:
14.3 days - Average sunshine days in August:
14.7 days - Average sunshine days in September:
16.1 days - Average sunshine days in October:
19.1 days - Average sunshine days in November:
20.5 days - Average sunshine days in December:
20.4 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (11.3 days).
Average UV index
Treynor, 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
Treynor, IA
The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is July (Cloud cover 25).
Average visibility
Treynor, 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).
Treynor, Iowa, USA
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