Climate and monthly weather forecastSaint Louis, MI
Climate and monthly weather forecast
Weather in January
January, the same as December, in Saint Louis, Michigan, is another subzero cold winter month, with temperature in the range of an average low of 16.2°F (-8.8°C) and an average high of 26.8°F (-2.9°C). Temperature records mark January as the coldest month, with highs averaging 26.8°F (-2.9°C) and lows at 16.2°F (-8.8°C). Weather in January »Weather in February
The last month of the winter, February, is also a subzero cold month in Saint Louis, Michigan, with temperature in the range of an average low of 17.4°F (-8.1°C) and an average high of 29.5°F (-1.4°C). February's climate shows a minor adjustment in average high-temperatures to a still subzero cold 29.5°F (-1.4°C) from January's 26.8°F (-2.9°C). Weather in February »Weather in March
March, the first month of the spring in Saint Louis, is an icy month, with an average temperature fluctuating between 40.8°F (4.9°C) and 26.4°F (-3.1°C). As Saint Louis enters March, the average high-temperature increases from the a subzero cold 29.5°F (-1.4°C) of February to a cold 40.8°F (4.9°C). Weather in March »Weather in April
April in Saint Louis, Michigan, is a fresh spring month, with an average temperature ranging between max 52.9°F (11.6°C) and min 36.3°F (2.4°C). Saint Louis's transition into April sees a rise in the average high-temperature, advancing from an icy 40.8°F (4.9°C) in March to a cool 52.9°F (11.6°C). Weather in April »Weather in May
The last month of the spring, May, is a refreshing month in Saint Louis, Michigan, with temperature in the range of an average high of 65.8°F (18.8°C) and an average low of 47.7°F (8.7°C). As Saint Louis transitions into May, a rise in the average high-temperature is observed, moving from a fresh 52.9°F (11.6°C) in April to a comfortable 65.8°F (18.8°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Saint Louis, Michigan, with an average temperature ranging between min 55.4°F (13°C) and max 73.9°F (23.3°C). June's arrival is noted with a slight increase in the average high-temperature, moving from a refreshing 65.8°F (18.8°C) in May to a warm 73.9°F (23.3°C). Weather in June »Weather in July
July, like June, in Saint Louis, Michigan, is a moderately hot summer month, with an average temperature ranging between max 79.3°F (26.3°C) and min 60.4°F (15.8°C). With average temperatures fluctuating between a high of 79.3°F (26.3°C) and a low of 60.4°F (15.8°C), July stands out as the warmest month. Weather in July »Weather in August
August, the last month of the summer in Saint Louis, is also a moderately hot month, with temperature in the range of an average low of 59.2°F (15.1°C) and an average high of 77.5°F (25.3°C). Upon the beginning of August, Saint Louis's high-temperatures register at a still warm 77.5°F (25.3°C), closely mirroring the preceding month. Weather in August »Weather in September
September, the first month of the autumn in Saint Louis, is also an agreeable month, with an average temperature varying between 52.3°F (11.3°C) and 71.1°F (21.7°C). The beginning of September subtly marks a decrease in the average high-temperature, transitioning from a moderately hot 77.5°F (25.3°C) in August to a pleasant 71.1°F (21.7°C). Weather in September »Weather in October
October, like September, is another mild autumn month in Saint Louis, Michigan, with temperature in the range of an average low of 43.2°F (6.2°C) and an average high of 58.1°F (14.5°C). With the beginning of October, the average high-temperature shows a decrease, transitioning from a pleasant 71.1°F (21.7°C) in September to a mild 58.1°F (14.5°C). Weather in October »Weather in November
November, the last month of the autumn in Saint Louis, is also a frosty month, with an average temperature ranging between max 43.9°F (6.6°C) and min 32.4°F (0.2°C). Onset of November witnesses a reduction in the average high-temperature, falling from a mild 58.1°F (14.5°C) in October to a frosty 43.9°F (6.6°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Saint Louis, Michigan, with an average temperature fluctuating between 23.9°F (-4.5°C) and 32.9°F (0.5°C). December brings a drop in Saint Louis's average high-temperature, falling from a chilly 43.9°F (6.6°C) in November to a cold 32.9°F (0.5°C). Weather in December »Updated: Aug 29, 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
Temperature records mark January as the coldest month, with highs averaging 26.8°F (-2.9°C) and lows at 16.2°F (-8.8°C).
January is the most humid month, with an average relative humidity of 88%.
In Saint Louis, during the entire year, the rain falls for 141.3 days and collects up to 22.48" (571mm) of precipitation.
January through April, October through December are months with snowfall.
January is the month with the most snowfall. Snow falls for 18 days and accumulates 5.91" (150mm) of snow.
In Saint Louis, during the entire year, snow falls for 65.5 days and aggregates up to 19.65" (499mm) of snow.
With an average of 2.7h of sunshine, January has the least sunshine of the year.
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1.
The month with the least rainfall is February, when the rain falls for 5.3 days and typically collects 1.26" (32mm) of precipitation.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from EST to EDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from EDT to EST.
With an average relative humidity of 75%, April is the least humid month.
May is the month with the most rainfall in Saint Louis. Rain falls for 15.9 days and accumulates 3.03" (77mm) of precipitation.
In Saint Louis, snow does not fall in May through September.
May through August, with an average maximum UV index of 5, are months with the highest UV index.
June has the longest days of the year, with an average of 15h and 24min of daylight.
With average temperatures fluctuating between a high of 79.3°F (26.3°C) and a low of 60.4°F (15.8°C), July stands out as the warmest month.
July has the most sunshine of the year, with an average of 10.4h of sunshine.
The month with the shortest days is December, with an average of 9h and 0min of daylight.
Average temperature
Saint Louis, MI
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (26.8°F).
The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is January (16.2°F).
Average pressure
Saint Louis, MI
- Average pressure in January:
30.06"Hg - Average pressure in February:
30.06"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.98"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.06"Hg
The month with the highest atmospheric pressure is March (30.09"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Saint Louis, MI
- Average wind speed in January:
9.5mph - Average wind speed in February:
9.8mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.9mph - Average wind speed in May:
8.5mph - Average wind speed in June:
7.5mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.8mph - Average wind speed in September:
7.3mph - Average wind speed in October:
8.9mph - Average wind speed in November:
9.4mph - Average wind speed in December:
9.4mph
The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is July (6.6mph).
Average humidity
Saint Louis, MI
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is April (75%).
Average rainfall
Saint Louis, MI
- Average rainfall in January:
1.65" - Average rainfall in February:
1.26" - Average rainfall in March:
1.38" - Average rainfall in April:
2.44" - Average rainfall in May:
3.03" - Average rainfall in June:
2.28"
- Average rainfall in July:
1.81" - Average rainfall in August:
1.93" - Average rainfall in September:
1.46" - Average rainfall in October:
2.56" - Average rainfall in November:
1.3" - Average rainfall in December:
1.38"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is February (1.26").
Average rainfall days
Saint Louis, MI
- Average rainfall days in January:
6.9 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
14.5 days - Average rainfall days in May:
15.9 days - Average rainfall days in June:
15.3 days
- Average rainfall days in July:
14.9 days - Average rainfall days in August:
13.8 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
15.3 days - Average rainfall days in November:
9.3 days - Average rainfall days in December:
8 days
The month with the highest number of rainy days is May (15.9 days).
The month with the least rainy days is February (5.3 days).
Average snowfall
Saint Louis, MI
The month with the highest snowfall is January (5.91").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Saint Louis, MI
- Average snowfall days in January:
18 days - Average snowfall days in February:
14.3 days - Average snowfall days in March:
8 days - Average snowfall days in April:
3.3 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:
0.3 days - Average snowfall days in November:
6.9 days - Average snowfall days in December:
14.5 days
The month with the highest number of snowfall days is January (18 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Saint Louis, MI
- Average daylight in January:
9h and 24min - Average daylight in February:
10h and 30min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 42min - Average daylight in June:
15h and 24min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 42min - Average daylight in December:
9h and 0min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in January:
2h and 42min - Average sunshine in February:
3h and 42min - Average sunshine in March:
5h and 30min - Average sunshine in April:
7h and 0min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
9h and 42min - Average sunshine in September:
8h and 6min - Average sunshine in October:
5h and 18min - Average sunshine in November:
4h and 24min - Average sunshine in December:
3h and 12min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 2h and 42min).
Average sunshine days
Saint Louis, MI
- Average sunshine days in January:
10.3 days - Average sunshine days in February:
10.6 days - Average sunshine days in March:
13.9 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
12.6 days - Average sunshine days in June:
12.4 days
- Average sunshine days in July:
13.7 days - Average sunshine days in August:
13.7 days - Average sunshine days in September:
15.8 days - Average sunshine days in October:
13.2 days - Average sunshine days in November:
14.2 days - Average sunshine days in December:
11.5 days
The month with the most sunshine days is September (15.8 days).
The month with the least sunshine days is January (10.3 days).
Average UV index
Saint Louis, MI
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover
Saint Louis, MI
The month with the most cloud cover is January (Cloud cover 71).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility
Saint Louis, MI
The months with the highest visibility are March, April, May, June, July, August, October and November (6mi).
The months with the lowest visibility are January, February, September and December (5mi).
