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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, in Saint Augustine, Illinois, is a freezing cold winter month, with temperature in the range of an average high of 29.8°F (-1.2°C) and an average low of 17.8°F (-7.9°C). January, with its average high-temperature of 29.8°F (-1.2°C) and an average low-temperature of 17.8°F (-7.9°C), holds the record as the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is a cold month in Saint Augustine, Illinois, with an average temperature varying between 34.9°F (1.6°C) and 21.7°F (-5.7°C). February records an average high-temperature of a wintry 34.9°F (1.6°C), indicating a minor variation from the preceding month. Weather in February »
Weather in March
March, the first month of the spring in Saint Augustine, is a chilly month, with temperature in the range of an average high of 48.2°F (9°C) and an average low of 33.3°F (0.7°C). With the onset of March, Saint Augustine's average high-temperature experiences a rise, moving from February's icy 34.9°F (1.6°C) to a frosty 48.2°F (9°C). Weather in March »
Weather in April
April is a refreshing spring month in Saint Augustine, Illinois, with an average temperature fluctuating between 43.7°F (6.5°C) and 60.4°F (15.8°C). As Saint Augustine transitions into April, the average high-temperature shows a change, moving from a chilly 48.2°F (9°C) in March to a mild 60.4°F (15.8°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Saint Augustine, Illinois, with an average temperature varying between 54.5°F (12.5°C) and 71.1°F (21.7°C). With the onset of May, Saint Augustine's average high-temperature experiences a rise, moving from April's moderate 60.4°F (15.8°C) to a pleasant 71.1°F (21.7°C). Weather in May »
Weather in June
June, the first month of the summer in Saint Augustine, is a warm month, with temperature in the range of an average high of 79.5°F (26.4°C) and an average low of 63.1°F (17.3°C). Saint Augustine's transition into June is marked by a minor temperature shift, moving from an agreeable 71.1°F (21.7°C) in May to a moderately hot 79.5°F (26.4°C). Weather in June »
Weather in July
July, like June, in Saint Augustine, Illinois, is a moderately hot summer month, with an average temperature varying between 64.9°F (18.3°C) and 82°F (27.8°C). In Saint Augustine, the peak average temperatures are observed in July, with a high of 82°F (27.8°C) and a low of 64.9°F (18.3°C). For most parts of July, the heat index is calculated to be a tropical 89.6°F (32°C). Weather in July »
Weather in August
August, the last month of the summer in Saint Augustine, is also a moderately hot month, with temperature in the range of an average high of 81.1°F (27.3°C) and an average low of 63.3°F (17.4°C). With the advent of August, Saint Augustine's high-temperatures adjust to a still warm 81.1°F (27.3°C), closely aligning with the preceding month. Weather in August »
Weather in September
September, the first month of the autumn in Saint Augustine, is also a moderately hot month, with an average temperature fluctuating between 56.7°F (13.7°C) and 76.1°F (24.5°C). Saint Augustine observes an average high-temperature of a still warm 76.1°F (24.5°C) in September, barely different from 81.1°F (27.3°C) in August. Weather in September »
Weather in October
October, like September, in Saint Augustine, Illinois, is another refreshing autumn month, with an average temperature fluctuating between 45.7°F (7.6°C) and 61.7°F (16.5°C). With the beginning of October, Saint Augustine's average high-temperature experiences a significant decrease, moving from a moderately hot 76.1°F (24.5°C) in September to a refreshing 61.7°F (16.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Saint Augustine, is also a frosty month, with an average temperature fluctuating between 34°F (1.1°C) and 47.5°F (8.6°C). The beginning of November involves a decrease in the average high-temperature, transitioning from a comfortable 61.7°F (16.5°C) in October to a frosty 47.5°F (8.6°C). Weather in November »
Weather in December
December, the first month of the winter in Saint Augustine, is also an icy month, with an average temperature ranging between min 25°F (-3.9°C) and max 35.8°F (2.1°C). Saint Augustine, Illinois, experiences a temperature shift at the start of December, with average high-temperatures adjusting from a frosty 47.5°F (8.6°C) in November to a cold 35.8°F (2.1°C). Weather in December »
[Resources]Frequently asked questions
What are the coldest months in Saint Augustine?
The coldest period in Saint Augustine is January, when temperatures fluctuate between an average high of 29.8°F (-1.2°C) and a low of 17.8°F (-7.9°C).
What is the driest month in Saint Augustine?
January and December are months with the least rain in Saint Augustine, Illinois, when the rain falls for 4.7 days and typically aggregates up to 0.59" (15mm) of rain.
How much does it rain in Saint Augustine?
Throughout the year, in Saint Augustine, Illinois, there are 126 rainfall days, and 14.45" (367mm) of precipitation is accumulated.
When does it snow in Saint Augustine?
Months with snowfall are January through April, October through December.
When does it snow the most in Saint Augustine?
January is the month with the most snowfall. Snow falls for 10.3 days and accumulates 1.26" (32mm) of snow.
How much does it snow in Saint Augustine?
In Saint Augustine, during the entire year, snow falls for 32.2 days and aggregates up to 4.8" (122mm) of snow.
What is the month with the least sunshine in Saint Augustine?
January has the least sunshine of the year in Saint Augustine, Illinois, with an average of 4.1h of sunshine.
What are the months with the lowest UV index in Saint Augustine?
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 Augustine?
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.
What is the rainiest month in Saint Augustine?
The month with the most rainfall in Saint Augustine, Illinois, is May, when the rain falls for 16.3 days and typically aggregates up to 2.2" (56mm) of precipitation.
When it does not snow in Saint Augustine?
May through September are months without snowfall in Saint Augustine.
When are the longest days in Saint Augustine?
June has the longest days of the year in Saint Augustine, Illinois, with an average of 15h and 0min of daylight.
What are the months with the most sunshine in Saint Augustine?
June and July, with an average of 10.1h of sunshine, are months with the most sunshine.
When is the highest UV index in Saint Augustine?
The months with the highest UV index in Saint Augustine are June through August, with an average maximum UV index of 6.
What are the warmest months in Saint Augustine?
July is the month when Saint Augustine's temperatures reach their peak, with averages of 82°F (27.8°C) and lows of 64.9°F (18.3°C).
What is the most humid month in Saint Augustine?
July is the most humid month in Saint Augustine, Illinois, with an average relative humidity of 84%.
What is the least humid month in Saint Augustine?
The least humid month in Saint Augustine is October, with an average relative humidity of 72%.
What is the month with the shortest days in Saint Augustine?
The month with the shortest days is December, with an average of 9h and 18min of daylight.
Average temperature
Saint Augustine, IL
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is January (29.8°F).
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (17.8°F).
Average pressure
Saint Augustine, 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:
30.01"Hg - Average pressure in November:
30.1"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 Augustine, IL
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.5mph - Average wind speed in March:
10.5mph - Average wind speed in April:
10.7mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.7mph - Average wind speed in August:
6.6mph - Average wind speed in September:
7.8mph - Average wind speed in October:
9.4mph - Average wind speed in November:
10.3mph - Average wind speed in December:
9.9mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity
Saint Augustine, IL
The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Saint Augustine, IL
- Average rainfall in January:
0.59" - Average rainfall in February:
0.67" - Average rainfall in March:
0.98" - Average rainfall in April:
1.61" - Average rainfall in May:
2.2" - Average rainfall in June:
1.69"
- Average rainfall in July:
1.54" - Average rainfall in August:
1.18" - Average rainfall in September:
1.22" - Average rainfall in October:
1.34" - Average rainfall in November:
0.83" - Average rainfall in December:
0.59"
The wettest month (with the highest rainfall) is May (2.2").
The driest months (with the least rainfall) are January and December (0.59").
Average rainfall days
Saint Augustine, IL
- Average rainfall days in January:
4.7 days - Average rainfall days in February:
4.4 days - Average rainfall days in March:
10.5 days - Average rainfall days in April:
13.8 days - Average rainfall days in May:
16.3 days - Average rainfall days in June:
16.1 days
- Average rainfall days in July:
14.4 days - Average rainfall days in August:
12.1 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
6.9 days - Average rainfall days in December:
6.8 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (4.4 days).
Average snowfall
Saint Augustine, IL
The month with the highest snowfall is January (1.26").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Saint Augustine, IL
- Average snowfall days in January:
10.3 days - Average snowfall days in February:
7.4 days - Average snowfall days in March:
3.7 days - Average snowfall days in April:
1.1 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:
0.3 days - Average snowfall days in November:
2.3 days - Average snowfall days in December:
7.1 days
The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Saint Augustine, 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 3min - 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 0min - Average sunshine in May:
8h and 5min - 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 Augustine, IL
- Average sunshine days in January:
17.3 days - Average sunshine days in February:
16.8 days - Average sunshine days in March:
16.5 days - Average sunshine days in April:
12.6 days - Average sunshine days in May:
11.9 days - Average sunshine days in June:
11.4 days
- Average sunshine days in July:
11.2 days - Average sunshine days in August:
14.8 days - Average sunshine days in September:
18.5 days - Average sunshine days in October:
17.5 days - Average sunshine days in November:
19.6 days - Average sunshine days in December:
18.1 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is July (11.2 days).
Average UV index
Saint Augustine, 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 Augustine, IL
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 29).
Average visibility
Saint Augustine, IL
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).
Saint Augustine, Illinois, USA
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