Chicago, Ill. H I S T O R I C A L   W E A T H E R   D A T A

	Average Temperature
		Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. °F 50.5 22.4 26.9 38.2 49.7 60.5 70.5 75.1 73.4 66.0 54.2 41.4 28.1 °C 10 -5 -2 3 9 15 21 23 23 18 12 5 -2
		Years Charted: 29 Source: NCDC TD 9641 Clim 81, 1961-1990

	Average High Temperature
		Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. °F 59.3 29.9 34.5 46.3 59.1 70.8 80.8 84.4 82.5 75.4 63.7 48.9 35.0 °C 15 -1 1 7 15 21 27 29 28 24 17 9 1
		Years Charted: 29 Source: NCDC TD 9641 Clim 81, 1961-1990

	Average Low Temperature
		Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. °F 41.7 14.9 19.3 30.0 40.2 50.2 60.2 65.7 64.2 56.5 44.7 33.8 21.2 °C 5 -9 -7 -1 4 10 15 18 17 13 7 1 -6
		Years Charted: 29 Source: NCDC TD 9641 Clim 81, 1961-1990

	Average Precipitation
		Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. in. 37.38 1.70 1.52 2.86 3.93 3.55 3.89 4.18 3.74 3.68 2.51 2.99 2.83 mm 949 43 38 72 99 90 98 106 94 93 63 75 71
		Years Charted: 29 Source: NCDC TD 9641 Clim 81, 1961-1990

---

---