Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Average
Helena, MT, USA 0.7 °C 3.7 °C 9.0 °C 14.3 °C 19.5 °C 24.3 °C 29.8 °C 29.2 °C 22.6 °C 14.8 °C 6.2 °C -0.2 °C 14.5 °C

Source: WMO - World Meteorological Organization



Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total
Helena, MT, USA 9 mm 8 mm 15 mm 25 mm 48 mm 52 mm 30 mm 30 mm 28 mm 17 mm 12 mm 10 mm 285 mm

Source: WMO - World Meteorological Organization

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Total
Helena, MT, USA 6 days 6 days 8 days 9 days 11 days 11 days 8 days 7 days 6 days 6 days 7 days 7 days 92 days

Source: WMO - World Meteorological Organization

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