As of 09:55 CDT

Naperville, IL weather in July

77°

Naperville, Sunday, 9 August, 09:55

Mostly clear. Feels like 78°. High 87°, low 63°.

Pressure29.97 inHg

Wind4 mph SW

Humidity75%

Visibility6.2 mi

Dew point69°

See detailed hourly forecast

In July, Naperville, IL averages a high of 82.4° and a low of 65.7°. About 3.8 inches of precipitation fall over the month (11 wet days). The record high is 99.1° (2012) and the record low 48.4° (1972). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	80.8°	63.3°	27%	92.8° (1963)	50.2° (1965)
2	81°	63°	28%	92.7° (2012)	52.5° (2015)
3	81.9°	64°	33%	94.5° (2012)	52.2° (1968)
4	82°	65.7°	38%	96.1° (2012)	52.2° (1996)
5	82.6°	65.3°	27%	97.7° (2012)	48.4° (1972)
6	82.6°	64.8°	35%	99.1° (2012)	50.2° (1972)
7	82.9°	65.3°	35%	98.8° (2012)	53.4° (1983)
8	82.6°	65.7°	42%	93.7° (1988)	52.9° (1984)
9	82.4°	66.4°	48%	95° (1989)	52.3° (1961)
10	82.4°	66.2°	33%	97° (1989)	49.6° (1963)
11	82.4°	65.5°	32%	95.4° (1966)	53.1° (1978)
12	82.6°	65.7°	40%	95° (1966)	52.7° (1975)
13	83.1°	65.8°	35%	98.2° (1995)	50° (1975)
14	83.3°	66.2°	33%	97.2° (1988)	54° (1967)
15	82.8°	66.7°	35%	97.3° (1988)	54° (1967)
16	82.9°	65.8°	28%	93.7° (2012)	54.3° (2014)
17	83.8°	66.6°	25%	95.9° (2012)	56.1° (2017)
18	83.8°	67.3°	38%	94.5° (2012)	54.7° (1979)
19	84°	67.5°	47%	93.4° (1991)	55.2° (1979)
20	83.1°	67.6°	38%	96.6° (2011)	53.2° (1971)
21	82.4°	67.1°	47%	96.4° (1983)	53.2° (1970)
22	82.2°	66.2°	43%	96.8° (1983)	52.3° (1996)
23	82°	66.4°	42%	95.7° (2012)	55.8° (2000)
24	82.6°	65.8°	40%	98.2° (2005)	52.2° (2000)
25	82.4°	65.8°	28%	98.8° (2012)	54.7° (2014)
26	82°	66.4°	35%	94.6° (1997)	53.8° (1962)
27	82°	65.7°	37%	92.1° (1997)	53.8° (1962)
28	81.7°	66.4°	37%	96.4° (1983)	54.3° (2013)
29	81.5°	64.8°	30%	95.2° (1999)	53.8° (1981)
30	81.1°	64.4°	35%	97.7° (1999)	54.3° (1981)
31	81.7°	64.8°	27%	95° (2006)	51.4° (1971)