Expand
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 Bristol, Illinois, with an average temperature varying between 28.4°F (-2°C) and 16.7°F (-8.5°C). January is Bristol's coldest month, registering average high temperatures of 28.4°F (-2°C) and lows of 16.7°F (-8.5°C). Weather in January »
Weather in February
The last month of the winter, February, is an icy month in Bristol, Illinois, with temperature in the range of an average high of 32.5°F (0.3°C) and an average low of 19.8°F (-6.8°C). The start of February sees the average high-temperature at an icy 32.5°F (0.3°C), showing little difference from January's 28.4°F (-2°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Bristol, Illinois, with an average temperature fluctuating between 31.5°F (-0.3°C) and 45.7°F (7.6°C). The arrival of March brings a temperature shift, with the average high-temperature escalating from a cold 32.5°F (0.3°C) in February to a chilly 45.7°F (7.6°C). Weather in March »
Weather in April
April in Bristol, Illinois, is a moderate spring month, with an average temperature fluctuating between 40.8°F (4.9°C) and 57°F (13.9°C). April's onset is marked by a temperature increase, moving from a chilly 45.7°F (7.6°C) in March to a refreshing 57°F (13.9°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Bristol, Illinois, with an average temperature ranging between min 52.3°F (11.3°C) and max 69.4°F (20.8°C). May shows a rise in the average high-temperature, moving from April's moderate 57°F (13.9°C) to an agreeable 69.4°F (20.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Bristol, Illinois, with an average temperature fluctuating between 78.4°F (25.8°C) and 60.8°F (16°C). June's arrival is marked by an increase in the average high-temperature, moving from a pleasant 69.4°F (20.8°C) in May to a moderately hot 78.4°F (25.8°C). Weather in June »
Weather in July
July, like June, in Bristol, Illinois, is another warm summer month, with an average temperature varying between 64.2°F (17.9°C) and 81.1°F (27.3°C). In Bristol, July records the highest average temperatures, peaking at 81.1°F (27.3°C) and reaching a low of 64.2°F (17.9°C). For July, the heat index is appraised at a tropical 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Bristol, Illinois, with an average temperature fluctuating between 79.3°F (26.3°C) and 62.4°F (16.9°C). The high-temperature average in August for Bristol is a still warm 79.3°F (26.3°C), staying closely aligned with July's conditions. Weather in August »
Weather in September
The first month of the autumn, September, is also a moderately hot month in Bristol, Illinois, with an average temperature fluctuating between 74.1°F (23.4°C) and 56.3°F (13.5°C). At the onset of September, Bristol records an average high-temperature of a still warm 74.1°F (23.4°C), showing little deviation from the preceding month. Weather in September »
Weather in October
October, the same as September, is another refreshing autumn month in Bristol, Illinois, with temperature in the range of an average low of 45.1°F (7.3°C) and an average high of 60.8°F (16°C). As September transitions into October, Bristol sees a drop in the average high-temperature, transitioning from a warm 74.1°F (23.4°C) to a refreshing 60.8°F (16°C). Weather in October »
Weather in November
November, the last month of the autumn in Bristol, is another chilly month, with an average temperature fluctuating between 46°F (7.8°C) and 33.3°F (0.7°C). Bristol experiences a noticeable temperature shift with the start of November, with average high-temperatures moving from a comfortable 60.8°F (16°C) in October to a frosty 46°F (7.8°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Bristol, Illinois, with temperature in the range of an average high of 34.5°F (1.4°C) and an average low of 24.1°F (-4.4°C). Bristol's December weather comes with a decrease in average high-temperatures, moving from a frosty 46°F (7.8°C) in November to an icy 34.5°F (1.4°C). Weather in December »
Updated: Jun 24, 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 part of the year is the coldest?
January is the coldest month of the year, registering average temperatures as high as 28.4°F (-2°C) and as low as 16.7°F (-8.5°C).
What are the most humid months?
January, February, July and August, with an average relative humidity of 83%, are most humid months.
How much does it rain?
In Bristol, during the entire year, the rain falls for 133.1 days and collects up to 16.93" (430mm) of precipitation.
When does it snow in Bristol?
January through April, October through December are months with snowfall.
When does it snow the most in Bristol?
January is the month with the most snowfall. Snow falls for 10.7 days and accumulates 1.73" (44mm) of snow.
How much does it snow?
In Bristol, during the entire year, snow falls for 39.5 days and aggregates up to 6.69" (170mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 3.8h of sunshine.
What is the month with the lowest UV index?
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Bristol, 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.
When it does not snow?
May through September are months without snowfall.
What is the wettest month in Bristol?
The month with the most rainfall is June, when the rain falls for 14.9 days and typically aggregates up to 2.24" (57mm) of precipitation.
When are the longest days in Bristol?
With an average of 15h and 12min of daylight, June has the longest days of the year in Bristol.
What are the months with the highest UV index?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What is the hottest time of year?
July, having an average high-temperature of 81.1°F (27.3°C) and an average low-temperature of 64.2°F (17.9°C), is the warmest month.
What month has the most sunshine?
With an average of 9.8h of sunshine, July has the most sunshine of the year in Bristol.
What is the least humid month?
The least humid month is October, with an average relative humidity of 74%.
What is the driest month?
The months with the least rainfall are November and December Rain falls for 7.6 days and accumulates 0.75" (19mm) of rain.
What is the month with the shortest days?
With an average of 9h and 12min of daylight, December has the shortest days of the year.
Average temperature
Bristol, IL
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (28.4°F).
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (16.7°F).
Average pressure
Bristol, IL
- Average pressure in January:
30.11"Hg - Average pressure in February:
30.1"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:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.1"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
Bristol, IL
- Average wind speed in January:
9.6mph - Average wind speed in February:
9.6mph - Average wind speed in March:
9.4mph - Average wind speed in April:
9.7mph - Average wind speed in May:
8.2mph - Average wind speed in June:
7.1mph
The windiest month (with the highest average wind speed) is April (9.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity
Bristol, IL
The months with the highest relative humidity are January, February, July and August (83%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Bristol, IL
- Average rainfall in January:
0.87" - Average rainfall in February:
0.79" - Average rainfall in March:
0.94" - Average rainfall in April:
1.77" - Average rainfall in May:
2.13" - Average rainfall in June:
2.24"
- Average rainfall in July:
2.17" - Average rainfall in August:
1.77" - Average rainfall in September:
1.3" - Average rainfall in October:
1.46" - Average rainfall in November:
0.75" - Average rainfall in December:
0.75"
The wettest month (with the highest rainfall) is June (2.24").
The driest months (with the least rainfall) are November and December (0.75").
Average rainfall days
Bristol, IL
- Average rainfall days in January:
5 days - Average rainfall days in February:
4.3 days - Average rainfall days in March:
10.3 days - Average rainfall days in April:
14.4 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
14.9 days
- Average rainfall days in July:
16.6 days - Average rainfall days in August:
15 days - Average rainfall days in September:
12 days - Average rainfall days in October:
11.2 days - Average rainfall days in November:
7.6 days - Average rainfall days in December:
6.5 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is February (4.3 days).
Average snowfall
Bristol, IL
The month with the highest snowfall is January (1.73").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Bristol, IL
- Average snowfall days in January:
10.7 days - Average snowfall days in February:
9.3 days - Average snowfall days in March:
5.6 days - Average snowfall days in April:
1.8 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:
0.4 days - Average snowfall days in November:
2.8 days - Average snowfall days in December:
8.8 days
The month with the highest number of snowfall days is January (10.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Bristol, 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 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 5min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 4min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Bristol, IL
- Average sunshine days in January:
17 days - Average sunshine days in February:
15.4 days - Average sunshine days in March:
15.7 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
12.5 days - Average sunshine days in June:
11.8 days
- Average sunshine days in July:
10.2 days - Average sunshine days in August:
11.6 days - Average sunshine days in September:
14.5 days - Average sunshine days in October:
17.6 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
17.7 days
The month with the most sunshine days is November (19.5 days).
The month with the least sunshine days is July (10.2 days).
Average UV index
Bristol, IL
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Bristol, IL
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is September (Cloud cover 32).
Average visibility
Bristol, IL
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Bristol, Illinois, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location