As of 18:39 CDT

Summit, IL weather in May

82°

Summit, Saturday, 8 August, 18:39

Clear. Feels like 84°. High 83°, low 69°.

Pressure30.00 inHg

Wind7.2 mph W

Humidity55%

Visibility6.2 mi

Dew point64°

See detailed hourly forecast

In May, Summit, IL averages a high of 68° and a low of 51.4°. About 4.1 inches of precipitation fall over the month (12 wet days). The record high is 93.6° (2012) and the record low 26.6° (2020). Normals are computed over the last 60 years.

Day	High	Low	Chance of precip.	Record high	Record low
1	62.4°	46.4°	43%	79.9° (2021)	31.3° (1978)
2	62.1°	46°	32%	82.2° (2021)	33.8° (1966)
3	61°	45.1°	35%	82.2° (2012)	33.6° (1967)
4	62.2°	45.1°	35%	79.3° (2024)	33.4° (1966)
5	64.8°	47.3°	38%	80.8° (1982)	34.5° (1967)
6	64.9°	47.7°	33%	82.2° (2004)	35.2° (1978)
7	64.6°	47.8°	42%	81.5° (2023)	33.1° (1989)
8	65.7°	48.7°	32%	83.3° (2000)	31.8° (1976)
9	65.3°	50°	40%	83.7° (1963)	26.6° (2020)
10	67.1°	48.9°	28%	85.5° (2022)	28.4° (1966)
11	66.7°	50°	47%	84.9° (2011)	34° (2021)
12	65.3°	50°	43%	86.7° (2022)	34.9° (2021)
13	66.6°	48.7°	50%	86° (2022)	34.7° (2021)
14	66.7°	50°	47%	84.6° (1982)	36° (2019)
15	66.9°	51.3°	38%	93.2° (2025)	38.8° (2014)
16	68.9°	51.3°	42%	85.8° (2001)	37.2° (1967)
17	68.2°	51.6°	32%	86.7° (1977)	37.8° (2014)
18	69.3°	52.2°	32%	87.3° (1962)	38.1° (2002)
19	69.3°	53.1°	37%	86.7° (1962)	36.5° (2002)
20	70.2°	52.9°	37%	88.7° (2012)	39.6° (2002)
21	70.2°	53.2°	32%	87.4° (1977)	32.9° (2002)
22	70.2°	54.1°	33%	86.2° (2021)	39.9° (1997)
23	70.7°	54°	32%	86.2° (1977)	36.5° (1963)
24	70.5°	54.1°	33%	89.4° (2021)	42.6° (2013)
25	70.2°	55.2°	47%	85.8° (2021)	42.4° (1992)
26	70.9°	55.2°	45%	86.5° (1985)	40.3° (2002)
27	71.8°	55.2°	35%	93.6° (2012)	38.7° (1961)
28	71.8°	56.1°	40%	91.9° (2012)	43° (1992)
29	73.6°	57.2°	43%	87.1° (1991)	41.9° (1965)
30	74.7°	57.6°	40%	87.4° (2011)	40.5° (2021)
31	74.3°	58.3°	42%	91.8° (2023)	43.9° (1972)