Lewistown 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.
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Thu 13 Aug, 2026 Weather in Lewistown

Sunrise: 06:12 AM Sunset: 08:32 PM	Moonrise: 07:02 AM Moonset: 08:57 PM	Max: 20.0 °c	Min: 11.8 °c	Avg: 15.3 °c	Precip: 6.90 mm	Max Wind: 17.3 kph

	Thu 13 0:00 am	Thu 13 3:00 am	Thu 13 6:00 am	Thu 13 9:00 am	Thu 13 12:00 pm	Thu 13 3:00 pm	Thu 13 6:00 pm	Thu 13 9:00 pm
Icon
Temp	15.6°c	13.5°c	11.8°c	13.1°c	15.8°c	18.9°c	19.6°c	14.5°c
Wind	10.4 kmph	12.6 kmph	9.0 kmph	12.6 kmph	13.3 kmph	13.0 kmph	12.6 kmph	14.8 kmph
Precip	0.00 mm	0.00 mm	0.10 mm	0.30 mm	3.70 mm	0.00 mm	0.00 mm	0.00 mm
Cloud	88%	0%	79%	83%	82%	1%	0%	0%
Humidity	62%	79%	91%	88%	81%	72%	72%	90%
Pressure	1015 mb	1016 mb	1015 mb	1016 mb	1015 mb	1013 mb	1012 mb	1015 mb

Lewistown Annual Weather Averages

Month	High Temp	Low Temp	Avg Temp	Sunshine Hours	Rainfall	Rain days	Pressure
January	0°C / 32°F	-8°C / 17°F	-4°C / 24°F	181 hours	35.06 mm / 1.38 In	7 days	1021 mb / 31 In
February	-1°C / 31°F	-10°C / 15°F	-5°C / 22°F	146 hours	31.01 mm / 1.22 In	8 days	1020 mb / 31 In
March	6°C / 42°F	-4°C / 25°F	1°C / 33°F	174 hours	40.81 mm / 1.61 In	7 days	1016 mb / 30 In
April	9°C / 49°F	-1°C / 30°F	4°C / 40°F	158 hours	79.91 mm / 3.15 In	10 days	1014 mb / 30 In
May	15°C / 60°F	4°C / 40°F	10°C / 50°F	178 hours	114.67 mm / 4.51 In	10 days	1013 mb / 30 In
June	21°C / 70°F	9°C / 48°F	15°C / 59°F	221 hours	110.99 mm / 4.37 In	10 days	1011 mb / 30 In
July	27°C / 81°F	14°C / 56°F	21°C / 69°F	284 hours	46.46 mm / 1.83 In	6 days	1012 mb / 30 In
August	26°C / 80°F	13°C / 56°F	20°C / 68°F	294 hours	63.50 mm / 2.50 In	6 days	1012 mb / 30 In
September	21°C / 71°F	9°C / 48°F	15°C / 59°F	268 hours	57.08 mm / 2.25 In	4 days	1012 mb / 30 In
October	12°C / 54°F	1°C / 35°F	6°C / 43°F	220 hours	51.00 mm / 2.01 In	6 days	1011 mb / 30 In
November	5°C / 41°F	-4°C / 25°F	0°C / 32°F	210 hours	37.44 mm / 1.47 In	6 days	1017 mb / 30 In
December	0°C / 31°F	-8°C / 17°F	-5°C / 24°F	186 hours	38.45 mm / 1.51 In	7 days	1019 mb / 31 In

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