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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 West Alton, Missouri, with an average temperature varying between 23.2°F (-4.9°C) and 36.1°F (2.3°C). The coldest time of the year is January, with temperatures averaging a high of 36.1°F (2.3°C) and a low of 23.2°F (-4.9°C). Weather in January »
Weather in February
The last month of the winter, February, is also an icy month in West Alton, Missouri, with an average temperature fluctuating between 26.8°F (-2.9°C) and 40.8°F (4.9°C). An average high-temperature of a still icy 40.8°F (4.9°C) marks February, exhibiting a close resemblance to the conditions in January. Weather in February »
Weather in March
The first month of the spring, March, is a cool month in West Alton, Missouri, with an average temperature varying between 37.2°F (2.9°C) and 53.2°F (11.8°C). Noticing a change, the average high-temperature during March moves from February's wintry 40.8°F (4.9°C) to a fresh 53.2°F (11.8°C). Weather in March »
Weather in April
April in West Alton, Missouri, is an enjoyable spring month, with an average temperature ranging between min 46.8°F (8.2°C) and max 64.6°F (18.1°C). As April arrives, a rise in the average high-temperature is observed, moving from a cool 53.2°F (11.8°C) in March to a comfortable 64.6°F (18.1°C). Weather in April »
Weather in May
The last month of the spring, May, is a moderately hot month in West Alton, Missouri, with an average temperature ranging between max 74.1°F (23.4°C) and min 56.8°F (13.8°C). With the onset of May, West Alton's average high-temperature experiences a rise, moving from April's comfortable 64.6°F (18.1°C) to a warm 74.1°F (23.4°C). Weather in May »
Weather in June
The first month of the summer, June, is also a moderately hot month in West Alton, Missouri, with an average temperature varying between 82.9°F (28.3°C) and 65.8°F (18.8°C). June showcases a minor temperature ascent, adjusting from May's moderately hot 74.1°F (23.4°C) to a still warm 82.9°F (28.3°C). Weather in June »
Weather in July
July, like June, in West Alton, Missouri, is another warm summer month, with an average temperature ranging between min 67.6°F (19.8°C) and max 85.3°F (29.6°C). July is the month when West Alton, Missouri, sees the highest average temperatures, with a high of 85.3°F (29.6°C) and a low of 67.6°F (19.8°C). July's heat index is estimated at a sweltering 96.8°F (36°C). Weather in July »
Weather in August
August, the last month of the summer in West Alton, is also a moderately hot month, with an average temperature fluctuating between 65.7°F (18.7°C) and 84°F (28.9°C). The advent of August observes an average high-temperature of a still moderately hot 84°F (28.9°C), nearly identical to July's 85.3°F (29.6°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in West Alton, Missouri, with an average temperature ranging between min 59.5°F (15.3°C) and max 78.6°F (25.9°C). The beginning of September brings a slight decrease in the average high-temperature, transitioning from 84°F (28.9°C) in August to a still warm 78.6°F (25.9°C). Weather in September »
Weather in October
October, like September, in West Alton, Missouri, is another enjoyable autumn month, with an average temperature varying between 65.5°F (18.6°C) and 48.6°F (9.2°C). October weather is marked by a drop in the average high-temperature, falling from a moderately hot 78.6°F (25.9°C) in September to a comfortable 65.5°F (18.6°C). Weather in October »
Weather in November
November, the last month of the autumn in West Alton, is another cool month, with an average temperature varying between 37°F (2.8°C) and 52.2°F (11.2°C). With November's onset, the average high-temperature recedes from October's enjoyable 65.5°F (18.6°C) to a fresh 52.2°F (11.2°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in West Alton, Missouri, with temperature in the range of an average high of 41.2°F (5.1°C) and an average low of 29.5°F (-1.4°C). December weather is marked by a drop in the average high-temperature, falling from a fresh 52.2°F (11.2°C) in November to an icy 41.2°F (5.1°C). Weather in December »
Updated: Jul 30, 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?
January stands out as West Alton's coldest month, with an average high-temperature of 36.1°F (2.3°C) and a low-temperature of 23.2°F (-4.9°C).
How much does it rain in West Alton?
In West Alton, during the entire year, the rain falls for 128.3 days and collects up to 18.9" (480mm) of precipitation.
When does it snow in West Alton?
January through March, November and December are months with snowfall.
How much does it snow?
Throughout the year, there are 17.9 snowfall days, and 3.58" (91mm) of snow is accumulated.
What are the months with the least sunshine?
The months with the least sunshine are January and February, with an average of 4.5h of sunshine.
When is the lowest UV index in West Alton?
The months with the lowest UV index are January, February, November and 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 6 days and accumulates 0.83" (21mm) of precipitation.
When does it snow the most?
The month with the most snowfall is February, when snow falls for 5.2 days and typically aggregates up to 1.14" (29mm) 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.
When it does not snow?
April through October are months without snowfall.
What is the wettest month?
May is the month with the most rainfall. Rain falls for 15.1 days and accumulates 2.44" (62mm) of precipitation.
When are the longest days?
With an average of 14h and 48min of daylight, June has the longest days of the year.
What month has the most sunshine?
With an average of 10.4h of sunshine, June has the most sunshine of the year.
When is the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 6.
What is the hottest time of year?
The warmest temperatures occur during July, when averages reach a peak of 85.3°F (29.6°C) and a low of 67.6°F (19.8°C).
What is the most humid month?
With an average relative humidity of 80%, July is the most humid month.
What is the least humid month?
October is the least humid month, with an average relative humidity of 71%.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 30min of daylight.
Average temperature
West Alton, MO
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (36.1°F).
The month with the highest average low temperature is July (67.6°F).
The coldest month (with the lowest average low temperature) is January (23.2°F).
Average pressure
West Alton, MO
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"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 (29.92"Hg).
Average wind speed
West Alton, MO
- Average wind speed in January:
9.6mph - Average wind speed in February:
9.5mph - Average wind speed in March:
9.3mph - Average wind speed in April:
9.3mph - Average wind speed in May:
7.5mph - Average wind speed in June:
6.6mph
- Average wind speed in July:
5.7mph - Average wind speed in August:
5.8mph - Average wind speed in September:
6.3mph - Average wind speed in October:
8.1mph - Average wind speed in November:
8.9mph - Average wind speed in December:
9mph
The windiest month (with the highest average wind speed) is January (9.6mph).
The calmest month (with the lowest average wind speed) is July (5.7mph).
Average humidity
West Alton, MO
The month with the highest relative humidity is July (80%).
The month with the lowest relative humidity is October (71%).
Average rainfall
West Alton, MO
- Average rainfall in January:
0.94" - Average rainfall in February:
0.83" - Average rainfall in March:
1.26" - Average rainfall in April:
2.01" - Average rainfall in May:
2.44" - Average rainfall in June:
2.17"
- Average rainfall in July:
2.05" - Average rainfall in August:
2.36" - Average rainfall in September:
1.3" - Average rainfall in October:
1.54" - Average rainfall in November:
1.06" - Average rainfall in December:
0.94"
The wettest month (with the highest rainfall) is May (2.44").
The driest month (with the least rainfall) is February (0.83").
Average rainfall days
West Alton, MO
- Average rainfall days in January:
5.7 days - Average rainfall days in February:
6 days - Average rainfall days in March:
11.2 days - Average rainfall days in April:
13 days - Average rainfall days in May:
15.1 days - Average rainfall days in June:
13.9 days
- Average rainfall days in July:
15.4 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
10.5 days - Average rainfall days in October:
9.4 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
6.3 days
The month with the highest number of rainy days is July (15.4 days).
The month with the least rainy days is January (5.7 days).
Average snowfall
West Alton, MO
The month with the highest snowfall is February (1.14").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
West Alton, MO
- Average snowfall days in January:
5.4 days - Average snowfall days in February:
5.2 days - Average snowfall days in March:
2.4 days - Average snowfall days in April:
0.3 days - Average snowfall days in May:
0 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:
0.9 days - Average snowfall days in December:
3.6 days
The month with the highest number of snowfall days is January (5.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
West Alton, MO
- Average daylight in January:
9h and 5min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 1min - Average daylight in December:
9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
4h and 3min - Average sunshine in February:
4h and 3min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 2min - Average sunshine in May:
9h and 2min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 1min - Average sunshine in September:
9h and 2min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 24min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).
Average sunshine days
West Alton, MO
- Average sunshine days in January:
20.9 days - Average sunshine days in February:
17 days - Average sunshine days in March:
16.1 days - Average sunshine days in April:
15.1 days - Average sunshine days in May:
13.7 days - Average sunshine days in June:
12.6 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
15.3 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
20.6 days - Average sunshine days in November:
19.9 days - Average sunshine days in December:
21 days
The month with the most sunshine days is December (21 days).
The month with the least sunshine days is June (12.6 days).
Average UV index
West Alton, MO
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, November and December (UV index 2).
Average cloud cover
West Alton, MO
The month with the most cloud cover is January (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 28).
Average visibility
West Alton, 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).
West Alton, Missouri, USA
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