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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, is another cold winter month in Mount Vernon, Oregon, with an average temperature fluctuating between 35.2°F (1.8°C) and 22.1°F (-5.5°C). January's climate shows a minor adjustment in average high-temperatures to a still icy 35.2°F (1.8°C) from December's 33.4°F (0.8°C). Weather in January »
Weather in February
The last month of the winter, February, is also an icy month in Mount Vernon, Oregon, with temperature in the range of an average high of 36.3°F (2.4°C) and an average low of 22.5°F (-5.3°C). With the advent of February, Mount Vernon experiences an average high-temperature of a still icy 36.3°F (2.4°C), mirroring a close resemblance to the previous month. Weather in February »
Weather in March
March, the first month of the spring in Mount Vernon, is also a wintry month, with an average temperature ranging between max 42.6°F (5.9°C) and min 26.2°F (-3.2°C). The average high-temperature mildly increases in March, edging from a cold 36.3°F (2.4°C) in February to a still icy 42.6°F (5.9°C). Weather in March »
Weather in April
April in Mount Vernon, Oregon, is a cool spring month, with an average temperature ranging between max 50.4°F (10.2°C) and min 29.3°F (-1.5°C). As April begins, there's a slight increase in the average high-temperature, moving from an icy 42.6°F (5.9°C) in March to a fresh 50.4°F (10.2°C). Weather in April »
Weather in May
May, the last month of the spring in Mount Vernon, is a comfortable month, with an average temperature ranging between max 61.3°F (16.3°C) and min 36.1°F (2.3°C). May signals a shift in the average high-temperature, moving from April's cool 50.4°F (10.2°C) to an enjoyable 61.3°F (16.3°C). Weather in May »
Weather in June
The first month of the summer, June, is an agreeable month in Mount Vernon, Oregon, with an average temperature varying between 41.2°F (5.1°C) and 69.4°F (20.8°C). The average high-temperature mildly increases in June, edging from an enjoyable 61.3°F (16.3°C) in May to a pleasant 69.4°F (20.8°C). Weather in June »
Weather in July
July is a warm summer month in Mount Vernon, Oregon, with an average temperature fluctuating between 48.4°F (9.1°C) and 81.7°F (27.6°C). The temperatures reach their highest averages in July, with highs of 81.7°F (27.6°C) and lows of 48.4°F (9.1°C). The heat index in July is evaluated at 82.4°F (28°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Mount Vernon, Oregon, with temperature in the range of an average high of 81°F (27.2°C) and an average low of 49.6°F (9.8°C). Mount Vernon marks the start of August with an average high-temperature of a still warm 81°F (27.2°C), hinting at a slight fluctuation from July's 81.7°F (27.6°C). Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Mount Vernon, Oregon, with an average temperature ranging between max 71.2°F (21.8°C) and min 44.2°F (6.8°C). Onset of September witnesses a reduction in the average high-temperature, falling from a warm 81°F (27.2°C) in August to an agreeable 71.2°F (21.8°C). Weather in September »
Weather in October
October, the same as September, in Mount Vernon, Oregon, is another refreshing autumn month, with temperature in the range of an average high of 56.3°F (13.5°C) and an average low of 35.6°F (2°C). October signals a considerable drop in Mount Vernon's average high-temperature, reducing from an agreeable 71.2°F (21.8°C) in September to a moderate 56.3°F (13.5°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Mount Vernon, Oregon, with an average temperature fluctuating between 43°F (6.1°C) and 27.5°F (-2.5°C). Mount Vernon's progression into November involves a drop in the average high-temperature, receding from a refreshing 56.3°F (13.5°C) in October to a frosty 43°F (6.1°C). Weather in November »
Weather in December
December, the first month of the winter in Mount Vernon, is also an icy month, with an average temperature fluctuating between 19.6°F (-6.9°C) and 33.4°F (0.8°C). In Mount Vernon, December records the lowest average temperatures, peaking at 33.4°F (0.8°C) and reaching a low of 19.6°F (-6.9°C). Weather in December »
[Resources]Frequently asked questions
How much does it rain in Mount Vernon?
Throughout the year, there are 127.7 rainfall days, and 17.09" (434mm) of precipitation is accumulated.
When does it snow in Mount Vernon?
January through May, September through December are months with snowfall in Mount Vernon, Oregon.
How much does it snow in Mount Vernon?
In Mount Vernon, Oregon, during the entire year, snow falls for 62.5 days and aggregates up to 39.17" (995mm) of snow.
What are the months with the least sunshine in Mount Vernon?
The months with the least sunshine are January and February, with an average of 5.2h of sunshine.
When is the lowest UV index in Mount Vernon?
The months with the lowest UV index are January through March, October through December, with an average maximum UV index of 2.
What is the most humid month in Mount Vernon?
February is the most humid month, with an average relative humidity of 85%.
What is the rainiest month in Mount Vernon?
February is the month with the most rainfall in Mount Vernon. Rain falls for 11.9 days and accumulates 2.28" (58mm) of precipitation.
When does it snow the most in Mount Vernon?
February is the month with the most snowfall in Mount Vernon. Snow falls for 12.5 days and accumulates 10.31" (262mm) of snow.
When is Daylight Saving Time (DST) in Mount Vernon?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from PST to PDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from PDT to PST.
When it does not snow in Mount Vernon?
In Mount Vernon, snow does not fall in June through August.
When are the longest days in Mount Vernon?
June has the longest days of the year, with an average of 15h and 30min of daylight.
What month is the hottest in Mount Vernon?
The month of July, characterized by an average high of 81.7°F (27.6°C) and a low of 48.4°F (9.1°C), is recognized as the warmest in Mount Vernon, Oregon.
What is the driest month in Mount Vernon?
The month with the least rainfall in Mount Vernon is July, when the rain falls for 3.8 days and typically collects 0.24" (6mm) of precipitation.
What is the month with the highest UV index in Mount Vernon?
With an average maximum UV index of 6, July is the month with the highest UV index.
What is the least humid month in Mount Vernon?
With an average relative humidity of 42%, August is the least humid month.
What month has the most sunshine in Mount Vernon?
The month with the most sunshine in Mount Vernon, Oregon, is August, with an average of 12.1h of sunshine.
What part of the year is the coldest in Mount Vernon?
In Mount Vernon, December registers the lowest temperatures, averaging 33.4°F (0.8°C) at the peak and 19.6°F (-6.9°C) at the lowest.
What is the month with the shortest days in Mount Vernon?
With an average of 8h and 54min of daylight, December has the shortest days of the year in Mount Vernon.
Average temperature
Mount Vernon, OR
The warmest month (with the highest average high temperature) is July (81.7°F).
The month with the lowest average high temperature is December (33.4°F).
The month with the highest average low temperature is August (49.6°F).
The coldest month (with the lowest average low temperature) is December (19.6°F).
Average pressure
Mount Vernon, OR
- Average pressure in January:
30.22"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
30.01"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.94"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.19"Hg
The month with the highest atmospheric pressure is January (30.22"Hg).
The month with the lowest atmospheric pressure is August (29.93"Hg).
Average wind speed
Mount Vernon, OR
- Average wind speed in January:
6mph - Average wind speed in February:
5.7mph - Average wind speed in March:
6.1mph - Average wind speed in April:
6.2mph - Average wind speed in May:
5.7mph - Average wind speed in June:
5.6mph
The windiest month (with the highest average wind speed) is April (6.2mph).
The calmest months (with the lowest average wind speed) are August and September (5mph).
Average humidity
Mount Vernon, OR
The month with the highest relative humidity is February (85%).
The month with the lowest relative humidity is August (42%).
Average rainfall
Mount Vernon, OR
- Average rainfall in January:
2.17" - Average rainfall in February:
2.28" - Average rainfall in March:
2.17" - Average rainfall in April:
1.85" - Average rainfall in May:
1.65" - Average rainfall in June:
0.94"
- Average rainfall in July:
0.24" - Average rainfall in August:
0.28" - Average rainfall in September:
0.55" - Average rainfall in October:
1.3" - Average rainfall in November:
1.42" - Average rainfall in December:
2.24"
The wettest month (with the highest rainfall) is February (2.28").
The driest month (with the least rainfall) is July (0.24").
Average rainfall days
Mount Vernon, OR
- Average rainfall days in January:
12.3 days - Average rainfall days in February:
11.9 days - Average rainfall days in March:
17.3 days - Average rainfall days in April:
14.9 days - Average rainfall days in May:
14.8 days - Average rainfall days in June:
8.9 days
- Average rainfall days in July:
3.8 days - Average rainfall days in August:
3.3 days - Average rainfall days in September:
6.6 days - Average rainfall days in October:
11.5 days - Average rainfall days in November:
11.3 days - Average rainfall days in December:
11.1 days
The month with the highest number of rainy days is March (17.3 days).
The month with the least rainy days is August (3.3 days).
Average snowfall
Mount Vernon, OR
- Average snowfall in January:
8.11" - Average snowfall in February:
10.31" - Average snowfall in March:
5.83" - Average snowfall in April:
1.69" - Average snowfall in May:
0.28" - Average snowfall in June:
0"
The month with the highest snowfall is February (10.31").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Mount Vernon, OR
- Average snowfall days in January:
11.7 days - Average snowfall days in February:
12.5 days - Average snowfall days in March:
9.6 days - Average snowfall days in April:
4.6 days - Average snowfall days in May:
1.3 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:
0.2 days - Average snowfall days in October:
1.3 days - Average snowfall days in November:
6.8 days - Average snowfall days in December:
14.5 days
The month with the highest number of snowfall days is December (14.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Mount Vernon, OR
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 3min - Average daylight in May:
14h and 5min - Average daylight in June:
15h and 3min
- Average daylight in July:
15h and 1min - Average daylight in August:
14h and 0min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
8h and 5min
The month with the longest days is June (Average daylight: 15h and 30min).
The month with the shortest days is December (Average daylight: 8h and 54min).
- Average sunshine in January:
5h and 1min - Average sunshine in February:
5h and 1min - Average sunshine in March:
7h and 2min - Average sunshine in April:
10h and 1min - Average sunshine in May:
10h and 5min - Average sunshine in June:
11h and 2min
- Average sunshine in July:
12h and 0min - Average sunshine in August:
12h and 1min - Average sunshine in September:
10h and 4min - Average sunshine in October:
7h and 1min - Average sunshine in November:
6h and 1min - Average sunshine in December:
5h and 2min
The month with the most sunshine is August (Average sunshine: 12h and 6min).
The months with the least sunshine are January and February (Average sunshine: 5h and 12min).
Average sunshine days
Mount Vernon, OR
- Average sunshine days in January:
13.5 days - Average sunshine days in February:
9 days - Average sunshine days in March:
9.2 days - Average sunshine days in April:
11.8 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
18.9 days
- Average sunshine days in July:
24.9 days - Average sunshine days in August:
24.8 days - Average sunshine days in September:
21.8 days - Average sunshine days in October:
18.1 days - Average sunshine days in November:
14.5 days - Average sunshine days in December:
11.4 days
The month with the most sunshine days is July (24.9 days).
The month with the least sunshine days is February (9 days).
Average UV index
Mount Vernon, OR
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover
Mount Vernon, OR
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 9).
Average visibility
Mount Vernon, OR
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Mount Vernon, Oregon, USA
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