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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 a freezing cold winter month in Saint David, Illinois, with an average temperature varying between 19.4°F (-7°C) and 31.5°F (-0.3°C). With average high temperatures of 31.5°F (-0.3°C) and lows of 19.4°F (-7°C), January is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is an icy month in Saint David, Illinois, with an average temperature varying between 23°F (-5°C) and 36.3°F (2.4°C). The dawn of February sees an average high-temperature of a wintry 36.3°F (2.4°C), subtly contrasting with January's 31.5°F (-0.3°C). Weather in February »
Weather in March
March, the first month of the spring in Saint David, is a frosty month, with an average temperature fluctuating between 34.3°F (1.3°C) and 49.6°F (9.8°C). An increase in the average high-temperature marks March, moving from February's wintry 36.3°F (2.4°C) to a frosty 49.6°F (9.8°C). Weather in March »
Weather in April
April in Saint David, Illinois, is a comfortable spring month, with an average temperature fluctuating between 61.3°F (16.3°C) and 44.2°F (6.8°C). April brings an increase in the average high-temperature, progressing from a chilly 49.6°F (9.8°C) in March to a refreshing 61.3°F (16.3°C). Weather in April »
Weather in May
May, the last month of the spring in Saint David, is an agreeable month, with an average temperature varying between 55°F (12.8°C) and 72°F (22.2°C). An increase in the average high-temperature marks May, moving from April's refreshing 61.3°F (16.3°C) to a pleasant 72°F (22.2°C). Weather in May »
Weather in June
June, the first month of the summer in Saint David, is a moderately hot month, with an average temperature varying between 80.8°F (27.1°C) and 63.7°F (17.6°C). Entering June, Saint David notices a subtle temperature elevation, with the average high-temperature advancing from May's agreeable 72°F (22.2°C) to a warm 80.8°F (27.1°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Saint David, Illinois, with temperature in the range of an average high of 82.8°F (28.2°C) and an average low of 65.8°F (18.8°C). Saint David's July weather, with an average high temperature of 82.8°F (28.2°C) and an average low temperature of 65.8°F (18.8°C), tends to be the warmest of the year. During July, the heat index is computed to be a hot 91.4°F (33°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Saint David, Illinois, with an average temperature ranging between max 82°F (27.8°C) and min 63.7°F (17.6°C). August's onset sees an average high-temperature of a still moderately hot 82°F (27.8°C), exhibiting a slight fluctuation from the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Saint David, Illinois, with an average temperature varying between 57.6°F (14.2°C) and 76.6°F (24.8°C). Saint David records a mild change in average high-temperature during September, easing from 82°F (27.8°C) in August to a still warm 76.6°F (24.8°C). Weather in September »
Weather in October
October, like September, in Saint David, Illinois, is another enjoyable autumn month, with an average temperature fluctuating between 63°F (17.2°C) and 46.6°F (8.1°C). During the transition into October, Saint David observes a decrease in the average high-temperature, falling from a moderately hot 76.6°F (24.8°C) in September to a comfortable 63°F (17.2°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Saint David, Illinois, with an average temperature varying between 49.1°F (9.5°C) and 35.1°F (1.7°C). November weather is marked by a drop in the average high-temperature, falling from a refreshing 63°F (17.2°C) in October to a chilly 49.1°F (9.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Saint David, Illinois, with an average temperature fluctuating between 37°F (2.8°C) and 26.4°F (-3.1°C). Setting in of December comes with a decrease in the average high-temperature, moving from a frosty 49.1°F (9.5°C) in November to a wintry 37°F (2.8°C). Weather in December »
[Resources]Frequently asked questions
What part of the year is the coldest in Saint David?
January, with its high-temperature average of 31.5°F (-0.3°C) and a low-temperature average of 19.4°F (-7°C), is the coldest month in Saint David.
How many days does it rain in Saint David?
In Saint David, Illinois, during the entire year, the rain falls for 131.7 days and collects up to 22.48" (571mm) of precipitation.
When does it snow in Saint David?
January through April, October through December are months with snowfall in Saint David.
When does it snow the most in Saint David?
The month with the most snowfall is January, when snow falls for 9.4 days and typically aggregates up to 3.35" (85mm) of snow.
How many days does it snow in Saint David?
In Saint David, Illinois, during the entire year, snow falls for 27.4 days and aggregates up to 9.21" (234mm) of snow.
What is the month with the least sunshine in Saint David?
With an average of 4.1h of sunshine, January has the least sunshine of the year.
What is the month with the lowest UV index in Saint David?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index.
When is Daylight Saving Time (DST) in Saint David?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Saint David, Illinois, 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 rainiest month in Saint David?
May is the month with the most rainfall in Saint David, Illinois. Rain falls for 16.7 days and accumulates 3.23" (82mm) of precipitation.
When it does not snow in Saint David?
May through September are months without snowfall.
When are the longest days in Saint David?
With an average of 15h and 0min of daylight, June has the longest days of the year in Saint David, Illinois.
What is the month with the most sunshine in Saint David?
June and July, with an average of 10.1h of sunshine, are months with the most sunshine in Saint David, Illinois.
What are the months with the highest UV index in Saint David?
June through August, with an average maximum UV index of 6, are months with the highest UV index in Saint David, Illinois.
What is the hottest time of year in Saint David?
In Saint David, the average temperatures in July are the highest, with a peak at 82.8°F (28.2°C) and a low of 65.8°F (18.8°C).
What is the most humid month in Saint David?
The most humid month is July, with an average relative humidity of 83%.
What is the least humid month in Saint David?
October is the least humid month in Saint David, with an average relative humidity of 71%.
What is the driest month in Saint David?
December is the month with the least rainfall. Rain falls for 6.5 days and accumulates 0.94" (24mm) of precipitation.
What is the month with the shortest days in Saint David?
December has the shortest days of the year in Saint David, Illinois, with an average of 9h and 18min of daylight.
Average temperature
Saint David, IL
The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (31.5°F).
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (19.4°F).
Average pressure
Saint David, IL
- 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:
29.95"Hg - Average pressure in June:
29.91"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:
30.02"Hg - Average pressure in November:
30.11"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 (29.91"Hg).
Average wind speed
Saint David, IL
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10.3mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.7mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.5mph - Average wind speed in September:
7.5mph - Average wind speed in October:
9.2mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity
Saint David, IL
The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Saint David, IL
- Average rainfall in January:
1.02" - Average rainfall in February:
1.1" - Average rainfall in March:
1.65" - Average rainfall in April:
2.6" - Average rainfall in May:
3.23" - Average rainfall in June:
2.68"
- Average rainfall in July:
2.17" - Average rainfall in August:
1.89" - Average rainfall in September:
2.09" - Average rainfall in October:
1.89" - Average rainfall in November:
1.22" - Average rainfall in December:
0.94"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is December (0.94").
Average rainfall days
Saint David, IL
- Average rainfall days in January:
4.8 days - Average rainfall days in February:
4.7 days - Average rainfall days in March:
11.9 days - Average rainfall days in April:
13.7 days - Average rainfall days in May:
16.7 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
13.2 days - Average rainfall days in September:
11 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
7.1 days - Average rainfall days in December:
6.5 days
The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is February (4.7 days).
Average snowfall
Saint David, IL
The month with the highest snowfall is January (3.35").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Saint David, IL
- Average snowfall days in January:
9.4 days - Average snowfall days in February:
6.8 days - Average snowfall days in March:
3.3 days - Average snowfall days in April:
1 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:
1.8 days - Average snowfall days in December:
5 days
The month with the highest number of snowfall days is January (9.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Saint David, IL
- Average daylight in January:
9h and 4min - 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 3min - Average daylight in June:
15h and 0min
- 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:
9h and 5min - Average daylight in December:
9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 3min - Average sunshine in April:
8h and 1min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 3min
The months with the most sunshine are June and July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
Saint David, IL
- Average sunshine days in January:
17.9 days - Average sunshine days in February:
17 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
14.6 days - Average sunshine days in May:
12.5 days - Average sunshine days in June:
11.1 days
- Average sunshine days in July:
11.7 days - Average sunshine days in August:
14.6 days - Average sunshine days in September:
17.1 days - Average sunshine days in October:
17.9 days - Average sunshine days in November:
20 days - Average sunshine days in December:
20.4 days
The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is June (11.1 days).
Average UV index
Saint David, IL
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
Saint David, IL
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility
Saint David, IL
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).
Saint David, Illinois, USA
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