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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
Climate and monthly weather forecast
Weather in January
January, the same as December, in Northfield, Illinois, is a freezing cold winter month, with an average temperature fluctuating between 28.8°F (-1.8°C) and 18.9°F (-7.3°C). Northfield's coldest month, January, generally records average temperatures ranging from a high of 28.8°F (-1.8°C) to a low of 18.9°F (-7.3°C). Weather in January »
Weather in February
The last month of the winter, February, is another freezing cold month in Northfield, Illinois, with an average temperature varying between 21.6°F (-5.8°C) and 31.8°F (-0.1°C). February's onset sees an average high-temperature of a still freezing cold 31.8°F (-0.1°C), exhibiting a slight fluctuation from the previous month. Weather in February »
Weather in March
March, the first month of the spring in Northfield, is an icy month, with an average temperature varying between 31.5°F (-0.3°C) and 42.3°F (5.7°C). As March arrives, Northfield's weather shows an increase in high-temperatures, moving from February's subzero cold 31.8°F (-0.1°C) to a cold 42.3°F (5.7°C). Weather in March »
Weather in April
April is a fresh spring month in Northfield, Illinois, with an average temperature varying between 52°F (11.1°C) and 39.7°F (4.3°C). As March transitions into April, a change in temperatures is observed, with average highs moving from a cold 42.3°F (5.7°C) to a fresh 52°F (11.1°C). Weather in April »
Weather in May
The last month of the spring, May, is an enjoyable month in Northfield, Illinois, with temperature in the range of an average low of 50.4°F (10.2°C) and an average high of 62.8°F (17.1°C). In Northfield, stepping into May brings a temperature increase, moving up from April's cool 52°F (11.1°C) to a refreshing 62.8°F (17.1°C). Weather in May »
Weather in June
The first month of the summer, June, is an agreeable month in Northfield, Illinois, with temperature in the range of an average low of 60.1°F (15.6°C) and an average high of 72.5°F (22.5°C). June brings a temperature increase, with average high-temperatures moving from May's comfortable 62.8°F (17.1°C) to an agreeable 72.5°F (22.5°C). Weather in June »
Weather in July
July is a warm summer month in Northfield, Illinois, with temperature in the range of an average high of 79.2°F (26.2°C) and an average low of 67.1°F (19.5°C). July registers as the month with the highest average temperatures, reaching 79.2°F (26.2°C) at its peak and 67.1°F (19.5°C) at the lowest. Weather in July »
Weather in August
August, the last month of the summer in Northfield, is another warm month, with an average temperature ranging between min 66.9°F (19.4°C) and max 78.1°F (25.6°C). The advent of August brings an average high-temperature of a still moderately hot 78.1°F (25.6°C), exhibiting minor difference from the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Northfield, Illinois, with an average temperature varying between 60.3°F (15.7°C) and 71.6°F (22°C). September's arrival comes with a mild decrease in the average high-temperature, moving subtly from a moderately hot 78.1°F (25.6°C) in August to an agreeable 71.6°F (22°C). Weather in September »
Weather in October
October, the same as September, in Northfield, Illinois, is another mild autumn month, with an average temperature ranging between min 47.7°F (8.7°C) and max 59.5°F (15.3°C). A shift in the average high-temperature occurs in October, reducing from an agreeable 71.6°F (22°C) in September to a refreshing 59.5°F (15.3°C). Weather in October »
Weather in November
November, the last month of the autumn in Northfield, is another chilly month, with an average temperature varying between 35.1°F (1.7°C) and 45.5°F (7.5°C). November ushers in a slight temperature change, with average high-temperatures reducing from October's refreshing 59.5°F (15.3°C) to a frosty 45.5°F (7.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Northfield, Illinois, with an average temperature ranging between min 26.1°F (-3.3°C) and max 34.9°F (1.6°C). During the transition into December, Northfield observes a decrease in the average high-temperature, falling from a chilly 45.5°F (7.5°C) in November to a wintry 34.9°F (1.6°C). Weather in December »
Updated: Aug 28, 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 month is the coldest?
Northfield notes the coldest temperatures in January, with a average high of 28.8°F (-1.8°C) and a low of 18.9°F (-7.3°C).
What is the most humid month?
The most humid month is January, with an average relative humidity of 82%.
How much does it rain?
In Northfield, during the entire year, the rain falls for 164.7 days and collects up to 35.28" (896mm) of precipitation.
When does it snow?
Months with snowfall are January through May, October through December.
When does it snow the most?
January is the month with the most snowfall. Snow falls for 13.1 days and accumulates 4.84" (123mm) of snow.
How much does it snow?
In Northfield, during the entire year, snow falls for 47.6 days and aggregates up to 17.8" (452mm) of snow.
What is the month with the least sunshine in Northfield?
The month with the least sunshine in Northfield, Illinois, is January, with an average of 3.7h of sunshine.
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.
What is the wettest month?
The wettest months in Northfield are May and June, with an average 4.57" (116mm) of rainfall.
When it does not snow?
June through September are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 12min of daylight.
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 warmest month?
Northfield experiences its highest temperatures in July, with an average peak of 79.2°F (26.2°C) and a low of 67.1°F (19.5°C).
What are the months with the most sunshine in Northfield?
July and August, with an average of 10.4h of sunshine, are months with the most sunshine.
What is the least humid month?
October is the least humid month, with an average relative humidity of 73%.
What is the driest month?
The month with the least rainfall is December, when the rain falls for 9.1 days and typically collects 1.65" (42mm) of precipitation.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 12min of daylight.
When is the lowest UV index?
December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature
Northfield, IL
The warmest month (with the highest average high temperature) is July (79.2°F).
The month with the lowest average high temperature is January (28.8°F).
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (18.9°F).
Average pressure
Northfield, IL
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.09"Hg
The month with the highest atmospheric pressure is January (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Northfield, IL
- Average wind speed in January:
11.5mph - Average wind speed in February:
11.1mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.6mph - Average wind speed in May:
8.9mph - Average wind speed in June:
8mph
- Average wind speed in July:
7.3mph - Average wind speed in August:
7.1mph - Average wind speed in September:
8.6mph - Average wind speed in October:
10.3mph - Average wind speed in November:
11mph - Average wind speed in December:
10.7mph
The windiest month (with the highest average wind speed) is January (11.5mph).
The calmest month (with the lowest average wind speed) is August (7.1mph).
Average humidity
Northfield, IL
The month with the highest relative humidity is January (82%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Northfield, IL
- Average rainfall in January:
1.77" - Average rainfall in February:
1.85" - Average rainfall in March:
2.01" - Average rainfall in April:
3.78" - Average rainfall in May:
4.57" - Average rainfall in June:
4.57"
The wettest months (with the highest rainfall) are May and June (4.57").
The driest month (with the least rainfall) is December (1.65").
Average rainfall days
Northfield, IL
- Average rainfall days in January:
7.3 days - Average rainfall days in February:
6.1 days - Average rainfall days in March:
12.2 days - Average rainfall days in April:
16.5 days - Average rainfall days in May:
19.1 days - Average rainfall days in June:
18.2 days
- Average rainfall days in July:
18.4 days - Average rainfall days in August:
17.7 days - Average rainfall days in September:
14.8 days - Average rainfall days in October:
14.5 days - Average rainfall days in November:
10.8 days - Average rainfall days in December:
9.1 days
The month with the highest number of rainy days is May (19.1 days).
The month with the least rainy days is February (6.1 days).
Average snowfall
Northfield, IL
- Average snowfall in January:
4.84" - Average snowfall in February:
4.65" - Average snowfall in March:
1.22" - Average snowfall in April:
2.44" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is January (4.84").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Northfield, IL
- Average snowfall days in January:
13.1 days - Average snowfall days in February:
11.2 days - Average snowfall days in March:
6.7 days - Average snowfall days in April:
2.3 days - Average snowfall days in May:
0.1 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:
3.9 days - Average snowfall days in December:
10 days
The month with the highest number of snowfall days is January (13.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Northfield, IL
- Average daylight in January:
9h and 3min - 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 4min - Average daylight in June:
15h and 1min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - 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 1min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
3h and 5min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 5min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
10h and 2min - Average sunshine in September:
9h and 0min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days
Northfield, IL
- Average sunshine days in January:
11.8 days - Average sunshine days in February:
10.9 days - Average sunshine days in March:
13.3 days - Average sunshine days in April:
10.2 days - Average sunshine days in May:
10 days - Average sunshine days in June:
9.2 days
- Average sunshine days in July:
9.3 days - Average sunshine days in August:
10.5 days - Average sunshine days in September:
11.7 days - Average sunshine days in October:
13.4 days - Average sunshine days in November:
15.5 days - Average sunshine days in December:
14.3 days
The month with the most sunshine days is November (15.5 days).
The month with the least sunshine days is June (9.2 days).
Average UV index
Northfield, IL
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Northfield, IL
The month with the most cloud cover is January (Cloud cover 61).
The months with the least cloud cover are July and August (Cloud cover 28).
Average visibility
Northfield, 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).