Climate and monthly weather forecast
Saint David, IL

Weather in January

January, the same as December, in Saint David, Illinois, is another subzero cold winter month, with an average temperature ranging between min 19.4°F (-7°C) and max 31.5°F (-0.3°C). The coldest month is January, with an average high-temperature of 31.5°F (-0.3°C) and an average low-temperature of 19.4°F (-7°C). Weather in January »

Weather in February

February, the last month of the winter in Saint David, is a wintry month, with an average temperature ranging between max 36.3°F (2.4°C) and min 23°F (-5°C). In February, the average high-temperature is essentially the same as in January - a cold 36.3°F (2.4°C). Weather in February »

Weather in March

March, the first month of the spring in Saint David, is a frosty month, with temperature in the range of an average high of 49.6°F (9.8°C) and an average low of 34.3°F (1.3°C). In Saint David, Illinois, the average high-temperature in March increases from a cold 36.3°F (2.4°C) in February to a chilly 49.6°F (9.8°C). Weather in March »

Weather in April

April is a comfortable spring month in Saint David, Illinois, with an average temperature varying between 44.2°F (6.8°C) and 61.3°F (16.3°C). In April, the average high-temperature rises from a chilly 49.6°F (9.8°C) in March to a comfortable 61.3°F (16.3°C). Weather in April »

Weather in May

The last month of the spring, May, is a pleasant month in Saint David, Illinois, with temperature in the range of an average high of 72°F (22.2°C) and an average low of 55°F (12.8°C). In Saint David, the average high-temperature in May rises from a comfortable 61.3°F (16.3°C) in April to an agreeable 72°F (22.2°C). Weather in May »

Weather in June

The first month of the summer, June, is a warm month in Saint David, Illinois, with an average temperature ranging between max 80.8°F (27.1°C) and min 63.7°F (17.6°C). In Saint David, the average high-temperature in June slightly increases from a pleasant 72°F (22.2°C) in May to a moderately hot 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 an average temperature varying between 82.8°F (28.2°C) and 65.8°F (18.8°C). July is the warmest month, with an average high-temperature of 82.8°F (28.2°C) and an average low-temperature of 65.8°F (18.8°C). The average heat index in July is appraised at a tropical 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 temperature in the range of an average low of 63.7°F (17.6°C) and an average high of 82°F (27.8°C). In Saint David, Illinois, the average high-temperature in August is almost the same as in July - a still warm 82°F (27.8°C). Weather in August »

Weather in September

September, the first month of the autumn in Saint David, is also a moderately hot month, with an average temperature varying between 76.6°F (24.8°C) and 57.6°F (14.2°C). In Saint David, the average high-temperature in September marginally drops from a moderately hot 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 comfortable autumn month, with an average temperature varying between 63°F (17.2°C) and 46.6°F (8.1°C). In October, the average high-temperature decreases from a warm 76.6°F (24.8°C) in September to a comfortable 63°F (17.2°C). Weather in October »

Weather in November

November, the last month of the autumn in Saint David, is also a frosty month, with an average temperature ranging between min 35.1°F (1.7°C) and max 49.1°F (9.5°C). In November, the average high-temperature drops from a comfortable 63°F (17.2°C) in October to a chilly 49.1°F (9.5°C). Weather in November »

Weather in December

December, the first month of the winter in Saint David, is also a wintry month, with an average temperature fluctuating between 37°F (2.8°C) and 26.4°F (-3.1°C). In December, the average high-temperature drops from a frosty 49.1°F (9.5°C) in November to a cold 37°F (2.8°C). Weather in December »
[Resources]

FAQ

What is the coldest month in Saint David?

With an average high-temperature of 31.5°F (-0.3°C) and an average low-temperature of 19.4°F (-7°C), January is the coldest month.

How many days does it rain in Saint David?

In Saint David, 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?

Months with snowfall are January through April, October through December.

What is the snowiest month 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 much does it snow in Saint David?

Throughout the year, there are 27.4 snowfall days, and 9.21" (234mm) of snow is accumulated.

What is the month with the least sunshine in Saint David?

January has the least sunshine of the year in Saint David, Illinois, with an average of 4.1h of sunshine.

When is the lowest UV index in Saint David?

The months with the lowest UV index in Saint David are January, February, November and December, with an average maximum UV index of 2.

When is Daylight Saving Time (DST) in Saint David?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts in Saint David, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from CDT to CST.

What is the rainiest month in Saint David?

The month with the most rainfall in Saint David, Illinois, is May, when the rain falls for 16.7 days and typically aggregates up to 3.23" (82mm) of precipitation.

When it does not snow in Saint David?

May through September are months without snowfall in Saint David, Illinois.

When are the longest days in Saint David?

With an average of 15h and 1min of daylight, June has the longest days of the year in Saint David, Illinois.

What are the months 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.

What is the month with the highest UV index in Saint David?

The months with the highest UV index in Saint David, Illinois, are June through August, with an average maximum UV index of 6.

What is the warmest month in Saint David?

With an average high-temperature of 82.8°F (28.2°C) and an average low-temperature of 65.8°F (18.8°C), July is the warmest month.

What is the most humid month in Saint David?

The most humid month in Saint David is July, with an average relative humidity of 83%.

What is the least humid month in Saint David?

With an average relative humidity of 71%, October is the least humid month in Saint David, Illinois.

What is the driest month in Saint David?

The month with the least rainfall in Saint David, Illinois, is December, when the rain falls for 6.5 days and typically collects 0.94" (24mm) of precipitation.

What is the month with the shortest days in Saint David?

With an average of 9h and 20min of daylight, December has the shortest days of the year in Saint David, Illinois.

Average pressure
Saint David, IL

Average pressure - Saint David, IL

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

[Resources]

Average wind speed
Saint David, IL

Average wind speed - Saint David, IL

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).

[Resources]

Average rainfall
Saint David, IL

Average rainfall - Saint David, IL

The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is December (0.94").

[Resources]

Average rainfall days
Saint David, IL

Average rainfall days - Saint David, IL

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).

[Resources]

Average snowfall
Saint David, IL

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").

[Resources]

Average snowfall days
Saint David, IL

Average snowfall days - Saint David, IL

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).

[Resources]

Average daylight / Average sunshine
Saint David, IL

Average daylight / Average sunshine - Saint David, IL

The month with the longest days is June (Average daylight: 15h and 1min).
The month with the shortest days is December (Average daylight: 9h and 20min).

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).

[Resources]

Average sunshine days
Saint David, IL

Average sunshine days - Saint David, IL

The month with the most sunshine days is December (20.4 days).
The month with the least sunshine days is June (11.1 days).

[Resources]

Average UV index
Saint David, IL

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).

[Resources]

Average visibility
Saint David, IL

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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location