Great Falls Weather History Montana, United States of America

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Past date: Past date must be from 1st Jan, 2009 onwards.

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Daily and hourly data from 1 Jan 2009 onwards.
Yearly Monthly Averages
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Fri 22 Aug, 2025 Weather in Great Falls

Sunrise: 06:31 AM Sunset: 08:24 PM	Moonrise: 05:38 AM Moonset: 08:24 PM	Max: 23.5 °c	Min: 13.3 °c	Avg: 17.1 °c	Precip: 0.00 mm	Max Wind: 26.6 kph

	Fri 22 0:00 am	Fri 22 3:00 am	Fri 22 6:00 am	Fri 22 9:00 am	Fri 22 12:00 pm	Fri 22 3:00 pm	Fri 22 6:00 pm	Fri 22 9:00 pm
Icon
Temp	16.1°c	13.9°c	13.9°c	15.9°c	18.0°c	21.5°c	21.9°c	16.3°c
Wind	15.1 kmph	24.1 kmph	7.2 kmph	16.9 kmph	19.8 kmph	18.7 kmph	18.7 kmph	13.7 kmph
Precip	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm	0.00 mm
Cloud	21%	23%	27%	88%	96%	14%	0%	0%
Humidity	53%	66%	67%	44%	42%	33%	33%	49%
Pressure	1021 mb	1021 mb	1023 mb	1025 mb	1026 mb	1024 mb	1022 mb	1024 mb

Great Falls Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	0°C / 32°F	-8°C / 18°F	-4°C / 25°F	182 hours	23.02 mm / 0.91 In	6 days	1021 mb / 31 In
February	0°C / 32°F	-9°C / 16°F	-5°C / 24°F	145 hours	25.36 mm / 1.00 In	7 days	1020 mb / 31 In
March	7°C / 44°F	-3°C / 26°F	1°C / 35°F	184 hours	25.08 mm / 0.99 In	5 days	1016 mb / 30 In
April	12°C / 53°F	1°C / 33°F	6°C / 43°F	174 hours	52.30 mm / 2.06 In	7 days	1014 mb / 30 In
May	17°C / 63°F	6°C / 42°F	12°C / 53°F	208 hours	75.65 mm / 2.98 In	8 days	1013 mb / 30 In
June	23°C / 73°F	10°C / 50°F	16°C / 62°F	246 hours	71.36 mm / 2.81 In	8 days	1011 mb / 30 In
July	29°C / 85°F	14°C / 57°F	22°C / 71°F	318 hours	23.55 mm / 0.93 In	4 days	1013 mb / 30 In
August	28°C / 83°F	14°C / 58°F	21°C / 70°F	312 hours	32.92 mm / 1.30 In	4 days	1013 mb / 30 In
September	23°C / 73°F	10°C / 50°F	16°C / 61°F	270 hours	53.80 mm / 2.12 In	4 days	1014 mb / 30 In
October	13°C / 56°F	2°C / 36°F	7°C / 45°F	222 hours	39.26 mm / 1.55 In	5 days	1016 mb / 30 In
November	6°C / 42°F	-3°C / 26°F	1°C / 34°F	216 hours	23.76 mm / 0.94 In	5 days	1018 mb / 31 In
December	0°C / 32°F	-8°C / 18°F	-4°C / 25°F	190 hours	25.27 mm / 1.00 In	7 days	1020 mb / 31 In

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