Helsinki , Finland 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 41 22 21 28 38 50 57 62 59 50 41 32 25 °C 5 -5 -6 -2 3 10 13 16 15 10 5 0 -3
		Years Charted: 21 Source: International Station Meteorological Climate Summary, Version 4.0

	Average High Temperature
		Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. °F 47 26 27 34 45 59 66 70 66 56 46 36 30 °C 8 -3 -2 1 7 15 18 21 18 13 7 2 -1
		Years Charted: 21 Source: International Station Meteorological Climate Summary, Version 4.0

	Average Low Temperature
		Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. °F 34 16 15 23 31 41 49 53 51 43 36 28 20 °C 1 -8 -9 -5 0 5 9 11 10 6 2 -2 -6
		Years Charted: 21 Source: International Station Meteorological Climate Summary, Version 4.0

	Highest Recorded Temperature
		Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. °F 88 45 50 55 70 82 86 88 88 77 63 50 48 °C 31 7 10 12 21 27 30 31 31 25 17 10 8
		Years Charted: 21 Source: International Station Meteorological Climate Summary, Version 4.0

	Lowest Recorded Temperature
		Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. °F -33 -33 -22 -15 12 25 30 40 34 19 10 -4 -26 °C -36 -36 -30 -26 -11 -3 -1 4 1 -7 -12 -20 -32
		Years Charted: 21 Source: International Station Meteorological Climate Summary, Version 4.0

	Average Precipitation
		Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. in. 24.9 1.8 1.4 1.4 1.5 1.7 1.8 2.4 2.9 2.6 2.7 2.6 2.2 mm 632 45 35 35 38 43 45 60 73 66 68 66 55
		Years Charted: 146 Source: International Station Meteorological Climate Summary, Version 4.0

	Average Wind Speed
		Year Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. mph 10 8 8 12 10 10 10 9 10 6 6 12 13 km/h 16 12 12 20 16 16 16 14 16 11 11 20 22
		Years Charted: 21 Source: International Station Meteorological Climate Summary, Version 4.0

	Average Morning Relative Humidity
		Total Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. % 89 88 89 89 87 84 85 90 93 93 91 90 89
		Years Charted: 21 Source: International Station Meteorological Climate Summary, Version 4.0

	Average Afternoon Relative Humidity
		Total Jan. Feb. Mar. Apr. May Jun. Jul. Aug. Sep. Oct. Nov. Dec. % 72 87 82 74 59 51 55 59 66 72 80 88 88
		Years Charted: 21 Source: International Station Meteorological Climate Summary, Version 4.0

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