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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 Mount Vernon, Iowa, with temperature in the range of an average high of 26.2°F (-3.2°C) and an average low of 14.2°F (-9.9°C). The coldest time of the year is January, with temperatures averaging a high of 26.2°F (-3.2°C) and a low of 14.2°F (-9.9°C). Weather in January »
Weather in February
The last month of the winter, February, is another freezing cold month in Mount Vernon, Iowa, with an average temperature fluctuating between 30.6°F (-0.8°C) and 17.4°F (-8.1°C). The advent of February sees the average high-temperature at a still subzero cold 30.6°F (-0.8°C), subtly shifted from January's 26.2°F (-3.2°C). Weather in February »
Weather in March
March, the first month of the spring in Mount Vernon, is a chilly month, with an average temperature varying between 45.5°F (7.5°C) and 30.7°F (-0.7°C). The average high-temperature exhibits a considerable increase in March, surging from a freezing cold 30.6°F (-0.8°C) in February to a chilly 45.5°F (7.5°C). Weather in March »
Weather in April
April in Mount Vernon, Iowa, is a moderate spring month, with an average temperature fluctuating between 57.9°F (14.4°C) and 41°F (5°C). In Mount Vernon, the onset of April comes with an increased average high-temperature, moving from March's chilly 45.5°F (7.5°C) to a refreshing 57.9°F (14.4°C). Weather in April »
Weather in May
May, the last month of the spring in Mount Vernon, is a pleasant month, with an average temperature fluctuating between 52.2°F (11.2°C) and 68.9°F (20.5°C). The shift from April to May is marked by an increase in the average high-temperature, moving from a mild 57.9°F (14.4°C) to an agreeable 68.9°F (20.5°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Mount Vernon, Iowa, with temperature in the range of an average high of 77.9°F (25.5°C) and an average low of 61.5°F (16.4°C). As June arrives, Mount Vernon's weather shows an increase in high-temperatures, moving from May's agreeable 68.9°F (20.5°C) to a warm 77.9°F (25.5°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Mount Vernon, Iowa, with an average temperature varying between 64.4°F (18°C) and 80.2°F (26.8°C). July, marked by an average high-temperature of 80.2°F (26.8°C) and a low-temperature of 64.4°F (18°C), is the warmest month. Weather in July »
Weather in August
August, the last month of the summer in Mount Vernon, is another warm month, with an average temperature ranging between max 79.3°F (26.3°C) and min 61.7°F (16.5°C). With August's arrival, Mount Vernon's weather records an average high-temperature of a still warm 79.3°F (26.3°C), marking little difference from July's 80.2°F (26.8°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Mount Vernon, Iowa, with temperature in the range of an average high of 74.1°F (23.4°C) and an average low of 54.9°F (12.7°C). The arrival of September marks a slight shift to an average high-temperature of a still moderately hot 74.1°F (23.4°C) from August's 79.3°F (26.3°C). Weather in September »
Weather in October
October, the same as September, in Mount Vernon, Iowa, is another mild autumn month, with an average temperature ranging between max 59.9°F (15.5°C) and min 43.9°F (6.6°C). The shift from September to October corresponds with a decrease in the average high-temperature, down to a refreshing 59.9°F (15.5°C) from a moderately hot 74.1°F (23.4°C). Weather in October »
Weather in November
November, the last month of the autumn in Mount Vernon, is another chilly month, with temperature in the range of an average high of 45.3°F (7.4°C) and an average low of 31.8°F (-0.1°C). As November begins, there is a noticeable decrease in the average high-temperature, falling from a moderate 59.9°F (15.5°C) in October to a frosty 45.3°F (7.4°C). Weather in November »
Weather in December
December, the first month of the winter in Mount Vernon, is still a cold month, with an average temperature ranging between max 33.1°F (0.6°C) and min 22.3°F (-5.4°C). In Mount Vernon, entering December brings a temperature decrement, reducing from November's chilly 45.3°F (7.4°C) to a cold 33.1°F (0.6°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest time of year in Mount Vernon?
In Mount Vernon, the average lowest temperatures are observed in January, with a high of 26.2°F (-3.2°C) and a low of 14.2°F (-9.9°C).
What is the most humid month in Mount Vernon?
With an average relative humidity of 85%, January is the most humid month in Mount Vernon.
What is the driest month in Mount Vernon?
January is the month with the least rainfall in Mount Vernon. Rain falls for 5.2 days and accumulates 1.34" (34mm) of precipitation.
How many days does it rain in Mount Vernon?
In Mount Vernon, Iowa, during the entire year, the rain falls for 147.9 days and collects up to 31.57" (802mm) of precipitation.
When does it snow in Mount Vernon?
Months with snowfall are January through April, October through December.
What is the snowiest month in Mount Vernon?
January is the month with the most snowfall in Mount Vernon. Snow falls for 12.7 days and accumulates 5.79" (147mm) of snow.
How many days does it snow in Mount Vernon?
Throughout the year, in Mount Vernon, Iowa, there are 44 snowfall days, and 18.35" (466mm) of snow is accumulated.
What is the month with the least sunshine in Mount Vernon?
With an average of 4h of sunshine, January has the least sunshine of the year in Mount Vernon, Iowa.
When is Daylight Saving Time (DST) in Mount Vernon?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Mount Vernon, Iowa, 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 wettest month in Mount Vernon?
The month with the most rainfall in Mount Vernon is May, when the rain falls for 19 days and typically aggregates up to 5" (127mm) of precipitation.
When it does not snow in Mount Vernon?
May through September are months without snowfall.
When are the longest days in Mount Vernon?
With an average of 15h and 12min of daylight, June has the longest days of the year.
What is the hottest time of year in Mount Vernon?
The warmest time of the year in Mount Vernon is July, with temperatures averaging a high of 80.2°F (26.8°C) and a low of 64.4°F (18°C).
What is the month with the most sunshine in Mount Vernon?
The months with the most sunshine in Mount Vernon, Iowa, are July and August, with an average of 9.8h of sunshine.
What is the month with the highest UV index in Mount Vernon?
July is the month with the highest UV index in Mount Vernon, with an average maximum UV index of 6.
What is the least humid month in Mount Vernon?
October is the least humid month in Mount Vernon, with an average relative humidity of 73%.
What is the month with the shortest days in Mount Vernon?
December has the shortest days of the year in Mount Vernon, with an average of 9h and 12min of daylight.
When is the lowest UV index in Mount Vernon?
The month with the lowest UV index is December, with an average maximum UV index of 1.
Average temperature
Mount Vernon, IA
The warmest month (with the highest average high temperature) is July (80.2°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 (14.2°F).
Average pressure
Mount Vernon, IA
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.9"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"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Mount Vernon, IA
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.5mph - Average wind speed in April:
10.8mph - Average wind speed in May:
9.1mph - Average wind speed in June:
7.9mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity
Mount Vernon, IA
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Mount Vernon, IA
- Average rainfall in January:
1.34" - Average rainfall in February:
1.38" - Average rainfall in March:
2.05" - Average rainfall in April:
3.43" - Average rainfall in May:
5" - Average rainfall in June:
4.37"
- Average rainfall in July:
3.31" - Average rainfall in August:
2.09" - Average rainfall in September:
2.72" - Average rainfall in October:
2.56" - Average rainfall in November:
1.77" - Average rainfall in December:
1.57"
The wettest month (with the highest rainfall) is May (5").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days
Mount Vernon, IA
- Average rainfall days in January:
5.2 days - Average rainfall days in February:
5.2 days - Average rainfall days in March:
12.1 days - Average rainfall days in April:
15.9 days - Average rainfall days in May:
19 days - Average rainfall days in June:
18.8 days
- Average rainfall days in July:
17.6 days - Average rainfall days in August:
14 days - Average rainfall days in September:
12 days - Average rainfall days in October:
12.2 days - Average rainfall days in November:
9.1 days - Average rainfall days in December:
6.8 days
The month with the highest number of rainy days is May (19 days).
The months with the least rainy days are January and February (5.2 days).
Average snowfall
Mount Vernon, IA
The month with the highest snowfall is January (5.79").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Mount Vernon, IA
- Average snowfall days in January:
12.7 days - Average snowfall days in February:
10.3 days - Average snowfall days in March:
6.1 days - Average snowfall days in April:
1.4 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:
0.7 days - Average snowfall days in November:
3.2 days - Average snowfall days in December:
9.5 days
The month with the highest number of snowfall days is January (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Mount Vernon, IA
- Average daylight in January:
9h and 3min - 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 4min - 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 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 2min - Average sunshine in April:
7h and 3min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 3min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 2min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Mount Vernon, IA
- Average sunshine days in January:
15.5 days - Average sunshine days in February:
14 days - Average sunshine days in March:
13.9 days - Average sunshine days in April:
11.2 days - Average sunshine days in May:
9.2 days - Average sunshine days in June:
8.1 days
- Average sunshine days in July:
9.6 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
15.9 days - Average sunshine days in October:
16.9 days - Average sunshine days in November:
17 days - Average sunshine days in December:
16.8 days
The month with the most sunshine days is November (17 days).
The month with the least sunshine days is June (8.1 days).
Average UV index
Mount Vernon, IA
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Mount Vernon, IA
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility
Mount Vernon, 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).
Mount Vernon, Iowa, USA
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