weather.gov

Home

News

Organization

Search for:  NWSAll NOAA

Point Forecast: Lewistown MT  47.07N 109.43W (Elev. 3898 ft)	Last Update: 10:22 pm MST Dec 8, 2019

[hide menu]  |  Font Size: A A A

Weather Elements Fire Weather Aviation Weather Temperature (°F) Dewpoint (°F) Wind Chill (°F) Surface Wind  ktmphkm/hm/s Sky Cover (%) Precipitation Potential (%) Relative Humidity (%) Rain Thunder Snow Freezing Rain Sleet Fog Mixing Height  x100ftx100m Haines Index Trans. Wind  ktmphkm/hm/s Vent Rate (x1000 mph-ft) Grassland Fire Danger Index Ceiling Height Visibility

48-Hour Period Starting: 2am Mon, Dec 9 20193am Mon, Dec 9 20194am Mon, Dec 9 20195am Mon, Dec 9 20196am Mon, Dec 9 20197am Mon, Dec 9 20198am Mon, Dec 9 20199am Mon, Dec 9 201910am Mon, Dec 9 201911am Mon, Dec 9 201912pm Mon, Dec 9 20191pm Mon, Dec 9 20192pm Mon, Dec 9 20193pm Mon, Dec 9 20194pm Mon, Dec 9 20195pm Mon, Dec 9 20196pm Mon, Dec 9 20197pm Mon, Dec 9 20198pm Mon, Dec 9 20199pm Mon, Dec 9 201910pm Mon, Dec 9 201911pm Mon, Dec 9 201912am Tue, Dec 10 20191am Tue, Dec 10 20192am Tue, Dec 10 20193am Tue, Dec 10 20194am Tue, Dec 10 20195am Tue, Dec 10 20196am Tue, Dec 10 20197am Tue, Dec 10 20198am Tue, Dec 10 20199am Tue, Dec 10 201910am Tue, Dec 10 201911am Tue, Dec 10 201912pm Tue, Dec 10 20191pm Tue, Dec 10 20192pm Tue, Dec 10 20193pm Tue, Dec 10 20194pm Tue, Dec 10 20195pm Tue, Dec 10 20196pm Tue, Dec 10 20197pm Tue, Dec 10 20198pm Tue, Dec 10 20199pm Tue, Dec 10 201910pm Tue, Dec 10 201911pm Tue, Dec 10 201912am Wed, Dec 11 20191am Wed, Dec 11 20192am Wed, Dec 11 20193am Wed, Dec 11 20194am Wed, Dec 11 20195am Wed, Dec 11 20196am Wed, Dec 11 20197am Wed, Dec 11 20198am Wed, Dec 11 20199am Wed, Dec 11 201910am Wed, Dec 11 201911am Wed, Dec 11 201912pm Wed, Dec 11 20191pm Wed, Dec 11 20192pm Wed, Dec 11 20193pm Wed, Dec 11 20194pm Wed, Dec 11 20195pm Wed, Dec 11 20196pm Wed, Dec 11 20197pm Wed, Dec 11 20198pm Wed, Dec 11 20199pm Wed, Dec 11 201910pm Wed, Dec 11 201911pm Wed, Dec 11 201912am Thu, Dec 12 20191am Thu, Dec 12 20192am Thu, Dec 12 20193am Thu, Dec 12 20194am Thu, Dec 12 20195am Thu, Dec 12 20196am Thu, Dec 12 20197am Thu, Dec 12 20198am Thu, Dec 12 20199am Thu, Dec 12 201910am Thu, Dec 12 201911am Thu, Dec 12 201912pm Thu, Dec 12 20191pm Thu, Dec 12 20192pm Thu, Dec 12 20193pm Thu, Dec 12 20194pm Thu, Dec 12 20195pm Thu, Dec 12 20196pm Thu, Dec 12 20197pm Thu, Dec 12 20198pm Thu, Dec 12 20199pm Thu, Dec 12 201910pm Thu, Dec 12 201911pm Thu, Dec 12 201912am Fri, Dec 13 20191am Fri, Dec 13 20192am Fri, Dec 13 20193am Fri, Dec 13 20194am Fri, Dec 13 20195am Fri, Dec 13 20196am Fri, Dec 13 20197am Fri, Dec 13 20198am Fri, Dec 13 20199am Fri, Dec 13 201910am Fri, Dec 13 201911am Fri, Dec 13 201912pm Fri, Dec 13 20191pm Fri, Dec 13 2019

Date	12/09																						12/10
Hour (MST)	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01
Temperature (°F)	8	11	13	16	18	19	21	24	28	30	31	31	31	30	28	26	24	23	21	21	21	21	20	19
Dewpoint (°F)	1	4	5	8	10	12	15	17	19	20	21	21	21	22	23	22	21	20	18	18	18	17	17	16
Wind Chill (°F)	-2	2	3	5	7	7	9	12	17	19	20	21	21	20	19	18	17	16	14	13	13	13	12	11
Surface Wind (mph)	6	6	7	8	9	10	11	13	14	15	15	14	13	11	9	8	6	6	6	6	6	6	6	6
Wind Dir	WSW	WSW	W	W	W	W	W	W	W	WNW	WNW	WNW	NW	NW	NW	NW	NW	NW	NW	W	W	W	W	W
Gust								18	21	22	22	21	18
Sky Cover (%)	51	51	59	58	69	83	87	90	90	93	94	94	94	93	89	93	96	97	98	97	97	96	96	96
Precipitation Potential (%)	4	5	6	7	12	10	9	8	12	16	22	27	30	34	39	46	46	50	54	54	53	22	22	22
Relative Humidity (%)	72	72	71	70	71	74	77	73	68	67	66	66	67	73	80	85	87	87	87	87	87	87	87	87
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	--	--	--	--	--	--	--	--	--	SChc	SChc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	Chc	SChc	SChc	SChc
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Date																							12/11
Hour (MST)	02	03	04	05	06	07	08	09	10	11	12	13	14	15	16	17	18	19	20	21	22	23	00	01
Temperature (°F)	19	18	18	18	17	17	18	21	26	30	33	35	35	34	31	28	26	24	22	22	22	22	22	21
Dewpoint (°F)	15	15	14	14	14	14	14	16	19	21	23	24	24	24	22	20	18	16	15	15	15	14	14	13
Wind Chill (°F)	11	10	10	10	9	9	10	14	19	23	27	29	29	28	24	23	20	18	16	16	16	15	14	13
Surface Wind (mph)	6	6	6	6	6	6	6	6	6	7	7	7	7	7	7	5	5	5	5	5	5	6	6	6
Wind Dir	W	W	W	W	W	W	W	W	W	W	W	W	W	W	W	WSW	WSW	WSW	SW	SW	SW	SW	SW	SW
Gust
Sky Cover (%)	91	91	91	73	73	73	77	77	77	70	70	70	71	71	71	63	63	63	43	43	43	59	59	59
Precipitation Potential (%)	22	22	22	6	6	6	6	6	6	3	3	3	3	3	3	2	2	2	2	2	2	5	5	5
Relative Humidity (%)	87	86	85	85	86	86	85	81	75	69	66	64	64	66	69	72	73	73	73	73	73	71	71	70
Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Thunder	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Snow	SChc	SChc	SChc	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Freezing Rain	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--
Sleet	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--	--

International System of Units Forecast Discussion 7-Day Forecast Hourly Weather Graph Zone Forecast User Defined Area

---

Webmaster NOAA's National Weather Service Great Falls, MT

Disclaimer Credits Glossary

Privacy Policy About Us Career Opportunities