Nearby locations
Johnson County, Illinois, United States
Pond, Illinois, United States
Vienna, Illinois, United States
Nearby popular places
Taylor Bluff, United States
Deer Pond Nature Preserve, United States
Cave Creek Glade Nature Preserve, United States

Weather in Johnson County, United States

48°
Cloudy
Feels like 48°
·
High43°Low32°

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Air quality

Full Details
0
33
500
Air quality:Good

Pollen index

Full Details
Tree
0/5
012345
Weed
0/5
012345
Grass
0/5
012345

Today's weather summary

The weather in Johnson County on Saturday, November 14th, will change throughout the day from cloudy weather to clear.

Looks like cloud overcast will appear around noon and there is a high chance for clear skies before dawn.

Weather information for Johnson County, on Saturday, November 14th:

The highest temperature during the day is going to be 46°F at about 2 pm. The day will have very high relative humidity, with average humidity of 72%, ranging from 44% to a maximum value of 95% at about 6 am. The wind will be light, and will get up to 9 mph at 3 pm, blowing from the north. The cloud coverage will range from 1% around 1 am to as high as 95% around 4 pm with an average of 45%.

There is no probability for any precipitation throughout the day. The dew point will range from 25°F up to a maximum value of 31°F around 4 am.

The visibility is expected to be good with average visibility of 9 mi throughout the day. Atmospheric pressure will be high with average pressure of 1024 hPa. Sunrise will be at 6:18 am, and sunset at 4:31 pm, making it a total of 10 hours and 13 minutes of daylight.

Air quality forecast for Johnson County, on Saturday, November 14th:

On average, the air quality on this day will be good, meaning that air quality is satisfactory, and air pollution poses little or no risk. According to our index, ranging from 0 to 500, the air quality is going to be between values of 19 and 30.

Pollen forecast for Johnson County, on Saturday, November 14th:

The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have no risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.

The weather in Johnson County on Sunday, November 15th, will be mostly clear throughout the day, with cloud overcast in the early morning.

There is also a chance for some clouds before dawn at about 12 am.

Weather details for Johnson County, on Sunday, November 15th:

The maximum temperature of the day will be 52°F around 2 pm. The day will have very high relative humidity, with average humidity of 71%, ranging from 47% to a maximum value of 87% at about 6 am. The wind will be light, and will get up to 6 mph at 6 pm, blowing from the north. The cloud coverage will range from 9% around 9 pm to as high as 95% around 7 am with an average of 40%.

There is no probability for any precipitation throughout the day. The dew point will range from 31°F up to a maximum value of 34°F around 6 pm.

The visibility is expected to be good with average visibility of 10 mi throughout the day. Atmospheric pressure will be very high with average pressure of 1030 hPa. Sunrise will be at 6:19 am, and sunset at 4:30 pm, making it a total of 10 hours and 11 minutes of daylight.

Air quality forecast for Johnson County, on Sunday, November 15th:

On average, the air quality on this day will be good, meaning that air quality is satisfactory, and air pollution poses little or no risk. According to our index, ranging from 0 to 500, the air quality is going to be between values of 17 and 34.

Pollen forecast for Johnson County, on Sunday, November 15th:

The overall pollen forecast for this day shows no significant pollen. Tree pollen on this day is expected to have no risk. There's no risk of weed pollen, and as for grass pollen, this day is expected to have no risk.

FAQ

How warm does it get in Johnson County?
The average annual highest temperature in Johnson County is 32.8°C (91.0°F), and the July 26th is the hottest day on average.
How cold does it get in Johnson County?
The average annual lowest temperature in Johnson County is -5.6°C (21.9°F), and the January 5th is the coldest day on average.
Which month has the most rain in Johnson County?
The wettest months in Johnson County are April and May.
What months does it snow in Johnson County?
The most common time of year for snow is February and January.