Climate and monthly weather forecastMount Vernon, MO
Climate and monthly weather forecast
Weather in January
January, like December, in Mount Vernon, Missouri, is an icy winter month, with an average temperature fluctuating between 42.3°F (5.7°C) and 26.6°F (-3°C). Temperature records mark January as the coldest month, with highs averaging 42.3°F (5.7°C) and lows at 26.6°F (-3°C). Weather in January »Weather in February
The last month of the winter, February, is a frosty month in Mount Vernon, Missouri, with an average temperature fluctuating between 46°F (7.8°C) and 30.2°F (-1°C). February's onset sees an average high-temperature of a frosty 46°F (7.8°C), exhibiting a slight fluctuation from the previous month. Weather in February »Weather in March
The first month of the spring, March, is a moderate month in Mount Vernon, Missouri, with temperature in the range of an average low of 39.4°F (4.1°C) and an average high of 56.8°F (13.8°C). March's arrival brings a change in high-temperatures, moving from a frosty 46°F (7.8°C) in February to a mild 56.8°F (13.8°C). Weather in March »Weather in April
April in Mount Vernon, Missouri, is a refreshing spring month, with an average temperature fluctuating between 47.7°F (8.7°C) and 66.7°F (19.3°C). In Mount Vernon, the onset of April comes with an increased average high-temperature, moving from March's mild 56.8°F (13.8°C) to a comfortable 66.7°F (19.3°C). Weather in April »Weather in May
May, the last month of the spring in Mount Vernon, is a moderately hot month, with temperature in the range of an average high of 75.7°F (24.3°C) and an average low of 56.5°F (13.6°C). Noticing a change, the average high-temperature during May moves from April's refreshing 66.7°F (19.3°C) to a warm 75.7°F (24.3°C). Weather in May »Weather in June
June, the first month of the summer in Mount Vernon, is still a warm month, with an average temperature ranging between max 85.8°F (29.9°C) and min 66.2°F (19°C). As Mount Vernon welcomes June, the average high-temperature sees a rise, transitioning from 75.7°F (24.3°C) in May to a still warm 85.8°F (29.9°C). Weather in June »Weather in July
July is a hot summer month in Mount Vernon, Missouri, with an average temperature varying between 88.7°F (31.5°C) and 68.9°F (20.5°C). The warmest period is July, when temperatures fluctuate between an average high of 88.7°F (31.5°C) and a low of 68.9°F (20.5°C). During July, the heat index is calculated to be an extremely hot 104°F (40°C). Weather in July »Weather in August
August, the last month of the summer in Mount Vernon, is another hot month, with an average temperature fluctuating between 87.1°F (30.6°C) and 66.7°F (19.3°C). With the advent of August, Mount Vernon's high-temperatures adjust to a still hot 87.1°F (30.6°C), closely aligning with the preceding month. Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Mount Vernon, Missouri, with an average temperature ranging between min 60.6°F (15.9°C) and max 79.9°F (26.6°C). In September, the average high-temperature marginally drops from a tropical 87.1°F (30.6°C) in August to a warm 79.9°F (26.6°C). Weather in September »Weather in October
October, like September, in Mount Vernon, Missouri, is another enjoyable autumn month, with temperature in the range of an average low of 48.7°F (9.3°C) and an average high of 67.1°F (19.5°C). During the transition into October, Mount Vernon observes a decrease in the average high-temperature, falling from a moderately hot 79.9°F (26.6°C) in September to a refreshing 67.1°F (19.5°C). Weather in October »Weather in November
The last month of the autumn, November, is also a fresh month in Mount Vernon, Missouri, with temperature in the range of an average high of 55.2°F (12.9°C) and an average low of 38.3°F (3.5°C). Transition into November marks a drop in the average high-temperature, moving from a comfortable 67.1°F (19.5°C) in October to a fresh 55.2°F (12.9°C). Weather in November »Weather in December
December, the first month of the winter in Mount Vernon, is also a frosty month, with an average temperature ranging between max 45.5°F (7.5°C) and min 30.7°F (-0.7°C). During the transition into December, Mount Vernon observes a decrease in the average high-temperature, falling from a fresh 55.2°F (12.9°C) in November to a frosty 45.5°F (7.5°C). Weather in December »Updated: Aug 23, 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
January is the coldest month of the year, registering average temperatures as high as 42.3°F (5.7°C) and as low as 26.6°F (-3°C).
January, July, August and October, with an average relative humidity of 73%, are the least humid months.
Throughout the year, there are 155.3 rainfall days, and 35.59" (904mm) of precipitation is accumulated.
Months with snowfall are January through May, November and December.
Throughout the year, there are 17.9 snowfall days, and 6.93" (176mm) of snow is accumulated.
The month with the least sunshine in Mount Vernon, Missouri, is January, with an average of 5.3h of sunshine.
The months with the lowest UV index are January and December, with an average maximum UV index of 2.
February is the month with the least rainfall. Rain falls for 9 days and accumulates 1.69" (43mm) of precipitation.
February is the month with the most snowfall. Snow falls for 5.3 days and accumulates 2.24" (57mm) of snow.
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.
The most humid month is May, with an average relative humidity of 78%.
The month with the most rainfall is May, when the rain falls for 17.8 days and typically aggregates up to 5.31" (135mm) of precipitation.
May through August, with an average maximum UV index of 6, are months with the highest UV index.
June through October are months without snowfall.
The month with the longest days is June, with an average of 14h and 42min of daylight.
June has the most sunshine of the year, with an average of 10.7h of sunshine.
In Mount Vernon, July records the average highest temperatures, peaking at 88.7°F (31.5°C) and reaching a low of 68.9°F (20.5°C).
With an average of 9h and 42min of daylight, December has the shortest days of the year.
Average temperature
Mount Vernon, MO
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is January (42.3°F).
The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (26.6°F).
Average pressure
Mount Vernon, MO
- Average pressure in January:
30.17"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.98"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The months with the lowest atmospheric pressure are April and June (29.93"Hg).
Average wind speed
Mount Vernon, MO
- Average wind speed in January:
9.9mph - Average wind speed in February:
10mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.6mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.8mph - Average wind speed in September:
7.1mph - Average wind speed in October:
8.6mph - Average wind speed in November:
9.5mph - Average wind speed in December:
9.3mph
The windiest months (with the highest average wind speed) are March and April (10.3mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity
Mount Vernon, MO
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, July, August and October (73%).
Average rainfall
Mount Vernon, MO
- Average rainfall in January:
1.93" - Average rainfall in February:
1.69" - Average rainfall in March:
3.15" - Average rainfall in April:
3.58" - Average rainfall in May:
5.31" - Average rainfall in June:
3.03"
- Average rainfall in July:
4.09" - Average rainfall in August:
3.58" - Average rainfall in September:
2.68" - Average rainfall in October:
2.83" - Average rainfall in November:
1.89" - Average rainfall in December:
1.81"
The wettest month (with the highest rainfall) is May (5.31").
The driest month (with the least rainfall) is February (1.69").
Average rainfall days
Mount Vernon, MO
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
9 days - Average rainfall days in March:
14.3 days - Average rainfall days in April:
15.8 days - Average rainfall days in May:
17.8 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
17 days - Average rainfall days in August:
16.3 days - Average rainfall days in September:
14.2 days - Average rainfall days in October:
10.6 days - Average rainfall days in November:
9.4 days - Average rainfall days in December:
7.8 days
The month with the highest number of rainy days is May (17.8 days).
The month with the least rainy days is January (7.3 days).
Average snowfall
Mount Vernon, MO
- Average snowfall in January:
2.13" - Average snowfall in February:
2.24" - Average snowfall in March:
1.02" - Average snowfall in April:
0.12" - Average snowfall in May:
0.31" - Average snowfall in June:
0"
The month with the highest snowfall is February (2.24").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days
Mount Vernon, MO
- Average snowfall days in January:
5.1 days - Average snowfall days in February:
5.3 days - Average snowfall days in March:
2.3 days - Average snowfall days in April:
0.5 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:
0.1 days - Average snowfall days in November:
1.3 days - Average snowfall days in December:
3 days
The month with the highest number of snowfall days is February (5.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Mount Vernon, MO
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 42min
- Average daylight in July:
14h and 24min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 42min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January:
5h and 18min - Average sunshine in February:
5h and 30min - Average sunshine in March:
6h and 24min - Average sunshine in April:
8h and 18min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 42min
- Average sunshine in July:
10h and 36min - Average sunshine in August:
10h and 24min - Average sunshine in September:
9h and 24min - Average sunshine in October:
6h and 6min - Average sunshine in November:
5h and 42min - Average sunshine in December:
5h and 30min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is January (Average sunshine: 5h and 18min).
Average sunshine days
Mount Vernon, MO
- Average sunshine days in January:
19.3 days - Average sunshine days in February:
14.2 days - Average sunshine days in March:
14.1 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
10.9 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
10.6 days - Average sunshine days in August:
13.3 days - Average sunshine days in September:
13.5 days - Average sunshine days in October:
18.7 days - Average sunshine days in November:
18.1 days - Average sunshine days in December:
20.7 days
The month with the most sunshine days is December (20.7 days).
The month with the least sunshine days is July (10.6 days).
Average UV index
Mount Vernon, MO
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover
Mount Vernon, MO
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 26).
Average visibility
Mount Vernon, MO
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).
