Climate and monthly weather forecastParnell, IL
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Parnell, Illinois, with an average temperature varying between 31.5°F (-0.3°C) and 19.9°F (-6.7°C). Parnell's coldest weather arrives in January, when temperatures average a high of 31.5°F (-0.3°C) and a low of 19.9°F (-6.7°C). Weather in January »Weather in February
February, the last month of the winter in Parnell, is a cold month, with temperature in the range of an average low of 23.4°F (-4.8°C) and an average high of 36.3°F (2.4°C). February's onset records a minor alteration in the average high-temperature to an icy 36.3°F (2.4°C) from January's 31.5°F (-0.3°C). Weather in February »Weather in March
The first month of the spring, March, is a chilly month in Parnell, Illinois, with temperature in the range of an average low of 34.3°F (1.3°C) and an average high of 49.3°F (9.6°C). Parnell, Illinois, sees an increase in the average high-temperature with the arrival of March, moving from February's cold 36.3°F (2.4°C) to a chilly 49.3°F (9.6°C). Weather in March »Weather in April
April in Parnell, Illinois, is a refreshing spring month, with an average temperature varying between 45.5°F (7.5°C) and 61.3°F (16.3°C). The onset of April marks an increase in the average high-temperature, moving from a frosty 49.3°F (9.6°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 Parnell, Illinois, with temperature in the range of an average high of 72.1°F (22.3°C) and an average low of 55.8°F (13.2°C). May brings a temperature increase, with average high-temperatures moving from April's refreshing 61.3°F (16.3°C) to an agreeable 72.1°F (22.3°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Parnell, Illinois, with an average temperature ranging between max 79.9°F (26.6°C) and min 63.9°F (17.7°C). Parnell's June weather indicates a minor increase in high-temperatures, edging from May's pleasant 72.1°F (22.3°C) to a warm 79.9°F (26.6°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Parnell, Illinois, with temperature in the range of an average high of 81°F (27.2°C) and an average low of 64.9°F (18.3°C). In Parnell, the average temperatures in July are the highest, with a peak at 81°F (27.2°C) and a low of 64.9°F (18.3°C). For most parts of July, the heat index is estimated at a hot 87.8°F (31°C). Weather in July »Weather in August
August, the last month of the summer in Parnell, is another warm month, with an average temperature varying between 63.3°F (17.4°C) and 80.2°F (26.8°C). Parnell's average high-temperature in August is a still warm 80.2°F (26.8°C), indicating a subtle variation from July. Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Parnell, Illinois, with an average temperature fluctuating between 58.1°F (14.5°C) and 75.9°F (24.4°C). The start of September sees the average high-temperature at a still warm 75.9°F (24.4°C), showing little difference from August's 80.2°F (26.8°C). Weather in September »Weather in October
October, like September, in Parnell, Illinois, is another comfortable autumn month, with an average temperature ranging between max 63.3°F (17.4°C) and min 46.9°F (8.3°C). A shift in Parnell's weather is observed as September turns into October, with the average high temperature reducing from a warm 75.9°F (24.4°C) to a refreshing 63.3°F (17.4°C). Weather in October »Weather in November
The last month of the autumn, November, is also a frosty month in Parnell, Illinois, with an average temperature varying between 35.4°F (1.9°C) and 48.9°F (9.4°C). The arrival of November corresponds with a temperature reduction, down from October's enjoyable 63.3°F (17.4°C) to a chilly 48.9°F (9.4°C). Weather in November »Weather in December
The first month of the winter, December, is also a wintry month in Parnell, Illinois, with temperature in the range of an average low of 27.3°F (-2.6°C) and an average high of 37.6°F (3.1°C). The onset of December coincides with a reduction in the average high-temperature, falling from a frosty 48.9°F (9.4°C) in November to a wintry 37.6°F (3.1°C). Weather in December »Updated: Feb 12, 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
January is the coldest month, exhibiting average temperatures of 31.5°F (-0.3°C) at the peak and 19.9°F (-6.7°C) at the base.
Throughout the year, in Parnell, Illinois, there are 138.7 rainfall days, and 20.91" (531mm) of precipitation is accumulated.
Months with snowfall are January through April, November and December.
The month with the most snowfall in Parnell, Illinois, is January, when snow falls for 9.6 days and typically aggregates up to 2.76" (70mm) of snow.
Throughout the year, there are 27.3 snowfall days, and 9.09" (231mm) of snow is accumulated.
The month with the least sunshine in Parnell, Illinois, is January, with an average of 4h of sunshine.
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Parnell.
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.
The month with the most rainfall in Parnell, Illinois, is May, when the rain falls for 17.3 days and typically aggregates up to 2.83" (72mm) of precipitation.
In Parnell, snow does not fall in May through October.
The month with the longest days is June, with an average of 15h and 0min of daylight.
With an average of 10.1h of sunshine, June has the most sunshine of the year.
The months with the highest UV index are June and July, with an average maximum UV index of 6.
Parnell's July weather, with an average high temperature of 81°F (27.2°C) and an average low temperature of 64.9°F (18.3°C), tends to be the warmest of the year.
July is the most humid month, with an average relative humidity of 85%.
The least humid month in Parnell is October, with an average relative humidity of 70%.
December is the month with the least rainfall. Rain falls for 7.6 days and accumulates 1.1" (28mm) of precipitation.
December has the shortest days of the year, with an average of 9h and 24min of daylight.
Average temperature
Parnell, IL
The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (31.5°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 (19.9°F).
Average pressure
Parnell, IL
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.94"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:
30.02"Hg - Average pressure in November:
30.12"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Parnell, IL
- Average wind speed in January:
10.9mph - Average wind speed in February:
10.8mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
6.5mph - Average wind speed in August:
6.4mph - Average wind speed in September:
7.5mph - Average wind speed in October:
9.6mph - Average wind speed in November:
10.4mph - Average wind speed in December:
10.3mph
The windiest month (with the highest average wind speed) is January (10.9mph).
The calmest month (with the lowest average wind speed) is August (6.4mph).
Average humidity
Parnell, IL
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Parnell, IL
- Average rainfall in January:
1.26" - Average rainfall in February:
1.14" - Average rainfall in March:
1.69" - Average rainfall in April:
2.28" - Average rainfall in May:
2.83" - Average rainfall in June:
2.44"
The wettest month (with the highest rainfall) is May (2.83").
The driest month (with the least rainfall) is December (1.1").
Average rainfall days
Parnell, IL
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
6.1 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
13.8 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
15.4 days
- Average rainfall days in July:
16.5 days - Average rainfall days in August:
13.7 days - Average rainfall days in September:
10.7 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
7.6 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (6.1 days).
Average snowfall
Parnell, IL
The month with the highest snowfall is January (2.76").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Parnell, IL
- Average snowfall days in January:
9.6 days - Average snowfall days in February:
6.7 days - Average snowfall days in March:
2.9 days - Average snowfall days in April:
0.6 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:
1.9 days - Average snowfall days in December:
5.5 days
The month with the highest number of snowfall days is January (9.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Parnell, IL
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
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 24min).
- Average sunshine in January:
4h and 0min - Average sunshine in February:
4h and 12min - Average sunshine in March:
6h and 24min - Average sunshine in April:
8h and 0min - Average sunshine in May:
9h and 6min - Average sunshine in June:
10h and 6min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 54min - Average sunshine in September:
9h and 6min - Average sunshine in October:
6h and 6min - Average sunshine in November:
5h and 24min - Average sunshine in December:
4h and 24min
The month with the most sunshine is June (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days
Parnell, IL
- Average sunshine days in January:
16.8 days - Average sunshine days in February:
16.8 days - Average sunshine days in March:
15.9 days - Average sunshine days in April:
14 days - Average sunshine days in May:
10.4 days - Average sunshine days in June:
11.3 days
- Average sunshine days in July:
11 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
16.6 days - Average sunshine days in October:
18.5 days - Average sunshine days in November:
19.2 days - Average sunshine days in December:
18.3 days
The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is May (10.4 days).
Average UV index
Parnell, IL
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Parnell, IL
The month with the most cloud cover is January (Cloud cover 57).
The month with the least cloud cover is September (Cloud cover 30).
Average visibility
Parnell, 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).
