Climate normals · 1970–2000
Joliet Climate
Joliet is a city in United States (IL) with a population of about 147,861. Its average annual temperature is 10.1°C (50°F), with roughly 937 mm of rain per year.
10.1°C
Avg Temp
937
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
Joliet Climate
Joliet has an average annual temperature of 10.1°C (50°F) and receives about 937 mm of precipitation per year. The warmest month is July and the coldest is January. Figures are 1970–2000 climate normals.
10.1°C
Avg Temp
937
Precip (mm/yr)
Jul
Hottest Month
Jan
Coldest Month
| Month | Avg (°C/°F) | Precip |
|---|---|---|
| January | -6° / 22° | 38 mm |
| February | -3° / 27° | 36 mm |
| March | 4° / 38° | 69 mm |
| April | 10° / 49° | 98 mm |
| May | 16° / 61° | 98 mm |
| June | 21° / 71° | 104 mm |
| July | 24° / 75° | 100 mm |
| August | 23° / 73° | 97 mm |
| September | 19° / 65° | 94 mm |
| October | 12° / 53° | 67 mm |
| November | 5° / 40° | 74 mm |
| December | -2° / 28° | 62 mm |
1970–2000 normals from WorldClim 2.1 (~9 km grid). Precipitation can be less precise near mountains or coastlines, where rainfall varies sharply over short distances.
Best time to visit Joliet
The most comfortable months to visit Joliet are typically June, August and September, when temperatures are mildest and rainfall is relatively low. The hottest month is July (around 30°C high). The coldest is January (near -10°C low). June is usually the wettest month.
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Frequently Asked Questions
The most comfortable months to visit Joliet are typically June, August and September, when temperatures are mildest and rainfall is relatively low (1970–2000 climate normals).
Joliet, United States has an average annual temperature of 10.1°C and about 937 mm of precipitation per year. The warmest month is July and the coldest is January.
In July, the hottest month, daily highs in Joliet average about 30°C (86°F).
Monthly climate normals (1970–2000) sampled from WorldClim 2.1 at ~9 km resolution. Humidity derived from vapor pressure. City coordinates and population from GeoNames.