As of 04:00 MDT

Weather in Lewistown, MT

42°

Lewistown, Sunday, 18 October, 04:00

Overcast. Feels like 42°. High 59°, low 40°.

Pressure30.09 inHg

Wind1.3 mph SW

Humidity61%

Visibility6.2 mi

Dew point31°

Sun, 18October

59°/40°

Mon, 19October

69°/36°

Tue, 20October

57°/40°

Wed, 21October

65°/38°

Thu, 22October

72°/44°

Fri, 23October

48°/40°

Sat, 24October

43°/32°

	00:00	02:00	04:00	06:00	08:00	10:00	12:00	14:00	16:00	18:00	20:00	22:00

Temperature	57°	43°	42°	42°	40°	50°	56°	59°	58°	52°	48°	45°
Feels like	57°	39°	40°	42°	40°	48°	53°	56°	56°	50°	42°	39°
Pressure, inHg	30.12	30.12	30.12	30.09	30.15	30.18	30.15	30.09	30.06	30.09	30.09	30.09
Wind, mph	5.8	5.8	5.8	1	0.2	1.1	1.2	2.6	4.9	5.6	5.3	4.6
Humidity, %	39%	39%	39%	66%	71%	59%	42%	39%	44%	51%	61%	61%
Precipitation	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in
Visibility	—	—	—	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi

	00:00	02:00	04:00	06:00	08:00	10:00	12:00	14:00	16:00	18:00	20:00	22:00

Temperature	42°	39°	36°	36°	37°	53°	64°	68°	69°	63°	50°	45°
Feels like	38°	35°	33°	33°	34°	50°	62°	66°	66°	61°	48°	44°
Pressure, inHg	30.06	30.03	30.00	29.97	29.94	29.91	29.88	29.85	29.83	29.83	29.85	29.85
Wind, mph	2.9	2.3	2	1.6	1.6	1.3	1.6	3.7	2.4	0.7	1.9	1.6
Humidity, %	67%	79%	85%	85%	82%	57%	36%	27%	28%	42%	59%	73%
Precipitation	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in
Visibility	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi

	00:00	02:00	04:00	06:00	08:00	10:00	12:00	14:00	16:00	18:00	20:00	22:00

Temperature	44°	44°	44°	46°	40°	50°	54°	56°	56°	50°	45°	42°
Feels like	43°	42°	44°	46°	40°	50°	52°	54°	54°	50°	45°	42°
Pressure, inHg	29.88	29.88	29.88	29.94	30.00	30.06	30.06	30.06	30.06	30.09	30.12	30.15
Wind, mph	1.5	1.4	0.9	0.3	0.8	0.9	2.5	2.7	2.6	1.2	0.6	0.6
Humidity, %	70%	66%	61%	57%	71%	63%	60%	55%	53%	71%	79%	86%
Precipitation	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in
Visibility	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi

	00:00	02:00	04:00	06:00	08:00	10:00	12:00	14:00	16:00	18:00	20:00	22:00

Temperature	40°	39°	38°	38°	38°	47°	59°	63°	63°	58°	51°	47°
Feels like	40°	35°	34°	34°	34°	44°	57°	61°	61°	56°	49°	47°
Pressure, inHg	30.18	30.15	30.15	30.15	30.15	30.12	30.06	30.00	29.94	29.94	29.94	29.94
Wind, mph	1	1.9	2.5	2.8	2.4	2.3	1.2	0.3	0.7	0.8	0.7	1.1
Humidity, %	87%	90%	93%	94%	95%	85%	49%	44%	49%	63%	76%	80%
Precipitation	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in
Visibility	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi	6.2 mi

	00:00	02:00	04:00	06:00	08:00	10:00	12:00	14:00	16:00	18:00	20:00	22:00

Temperature	47°	46°	45°	44°	51°	58°	65°	67°	65°	63°	61°	58°
Feels like	47°	46°	45°	44°	51°	57°	64°	66°	64°	61°	59°	56°
Pressure, inHg	29.91	29.88	29.85	29.77	29.77	29.77	29.77	29.77	29.77	29.77	29.77	29.77
Wind, mph	0.9	1.1	1.2	4.4	4.4	4.4	4.4	4.4	4.4	4.4	4.4	4.4
Humidity, %	77%	78%	79%	41%	41%	41%	41%	41%	41%	41%	41%	41%
Precipitation	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in
Visibility	6.2 mi	6.2 mi	6.2 mi	—	—	—	—	—	—	—	—	—

	00:00	02:00	04:00	06:00	08:00	10:00	12:00	14:00	16:00	18:00	20:00	22:00

Temperature	47°	40°	42°	44°	45°	46°	47°	46°	45°	44°	43°	41°
Feels like	47°	36°	40°	44°	44°	44°	43°	42°	41°	39°	38°	36°
Pressure, inHg	29.80	29.80	29.80	29.80	29.80	29.80	29.80	29.80	29.80	29.80	29.80	29.80
Wind, mph	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3	4.3
Humidity, %	89%	89%	89%	89%	89%	89%	89%	89%	89%	89%	89%	89%
Precipitation	0.01 in	0.01 in	0.01 in	0.01 in	0.01 in	0.01 in	0.01 in	0.01 in	0.01 in	0.01 in	0.01 in	0.01 in
Visibility	—	—	—	—	—	—	—	—	—	—	—	—

	00:00	02:00	04:00	06:00	08:00	10:00	12:00	14:00	16:00	18:00	20:00	22:00

Temperature	38°	35°	33°	32°	34°	35°	37°	38°	38°	39°	38°	37°
Feels like	38°	29°	27°	25°	28°	31°	33°	35°	36°	36°	35°	33°
Pressure, inHg	30.50	30.50	30.50	30.50	30.50	30.50	30.50	30.50	30.50	30.50	30.50	30.50
Wind, mph	3.9	3.9	3.9	3.9	3.9	3.9	3.9	3.9	3.9	3.9	3.9	3.9
Humidity, %	67%	67%	67%	67%	67%	67%	67%	67%	67%	67%	67%	67%
Precipitation	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in	0 in
Visibility	—	—	—	—	—	—	—	—	—	—	—	—

See detailed hourly forecast

Sun and moon today

Day length — 10 h 45 min

Sunrise — 07:40

Sunset — 18:25

Sunrise and sunset in local time

First quarter, 46%

Sunrise — —

Sunset — —

Lewistown, MT climate by month

The annual average temperature in Lewistown, MT is 44°. The warmest month is July (average high 79.5°), and the coldest is January (average low 13.7°). About 22.5 inches of precipitation fall per year, most of it in May (3.6 in). Figures are 60-year climate normals and records from 66 years of observations.

Month	High	Low	Precipitation	Wet days	Record high	Record low
January	31.2°	13.7°	1.2 in	8	62.2° (2024)	-39.5° (1996)
February	34°	15.9°	1.0 in	7	65.1° (1992)	-39.8° (1996)
March	42.4°	23.2°	1.5 in	9	71.6° (2025)	-30.8° (1960)
April	51°	30.9°	2.6 in	12	80.2° (1980)	-6.9° (2002)
May	61°	40.4°	3.6 in	14	86.4° (1980)	4.3° (1967)
June	70°	49.1°	3.1 in	13	97.9° (2021)	27.1° (1969)
July	79.5°	56.1°	1.7 in	8	100° (2007)	36.3° (1972)
August	78.9°	55.6°	1.7 in	7	99.5° (2018)	31.6° (1992)
September	68.8°	47.1°	1.8 in	7	98.6° (2022)	10° (1965)
October	55.4°	36.1°	1.7 in	8	87.4° (2011)	-16.4° (1991)
November	41.7°	24.9°	1.2 in	7	70° (1999)	-27° (1985)
December	32.4°	16.1°	1.3 in	8	62.6° (2021)	-47.2° (1983)