Armells Creek Montana Threshold Days by Year

13 fixed thresholds counted per year at Armells Creek Montana (USR0000MARM): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Armells Creek Montana Thresholds

Armells Creek Montana: days with a maximum temperature at or above 30 C (86 F) in 34 years, most in 2021 with 71.
Armells Creek Montana: days with a maximum temperature at or above 90 F (32.2 C) in 34 years, most in 2011 with 52.
Armells Creek Montana: days with a maximum temperature at or below 0 C (32 F) in 34 years, most in 1996 with 76.
Armells Creek Montana: nights with a minimum temperature at or below 0 C (32 F) in 34 years, most in 2002 with 177.
13 fixed thresholds have at least one qualifying day at Armells Creek Montana.

Days at or above 30 C (86 F)

34 years with a qualifying day

Days per year at Armells Creek Montana with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 71 in 2021.

Days at or above 30 C (86 F) per year at Armells Creek Montana
Year	Days	Decade average
1992	34	42.9
1993	16	42.9
1994	58	42.9
1995	45	42.9
1996	43	42.9
1997	42	42.9
1998	61	42.9
1999	44	42.9
2000	53	54.6
2001	65	54.6
2002	47	54.6
2003	65	54.6
2004	38	54.6
2005	51	54.6
2006	67	54.6
2007	63	54.6
2008	49	54.6
2009	48	54.6
2010	43	51.2
2011	62	51.2
2012	67	51.2
2013	54	51.2
2014	45	51.2
2015	44	51.2
2016	44	51.2
2017	69	51.2
2018	45	51.2
2019	39	51.2
2020	51	58
2021	71	58
2022	60	58
2023	56	58
2025	50	58
2026	60	58

For each year, a bar from the first to the last day at Armells Creek Montana meeting 30 C (86 F).

First to last qualifying date each year at Armells Creek Montana
Year	First date	Last date
1992	1992-04-29	1992-10-01
1993	1993-05-13	1993-09-11
1994	1994-06-20	1994-09-25
1995	1995-05-30	1995-10-11
1996	1996-06-07	1996-10-10
1997	1997-05-15	1997-09-30
1998	1998-05-03	1998-09-17
1999	1999-05-27	1999-09-23
2000	2000-05-01	2000-09-17
2001	2001-04-27	2001-10-01
2002	2002-06-15	2002-09-16
2003	2003-05-25	2003-10-19
2004	2004-06-03	2004-09-11
2005	2005-06-20	2005-09-20
2006	2006-05-16	2006-09-30
2007	2007-05-17	2007-10-24
2008	2008-05-17	2008-10-01
2009	2009-05-30	2009-09-26
2010	2010-05-18	2010-09-28
2011	2011-06-22	2011-10-04
2012	2012-04-23	2012-09-18
2013	2013-05-12	2013-09-21
2014	2014-05-22	2014-09-25
2015	2015-06-08	2015-10-10
2016	2016-05-04	2016-09-27
2017	2017-05-05	2017-09-12
2018	2018-05-26	2018-09-10
2019	2019-05-30	2019-09-16
2020	2020-05-31	2020-10-10
2021	2021-05-17	2021-10-05
2022	2022-06-17	2022-09-28
2023	2023-05-22	2023-09-26
2025	2025-05-10	2025-09-30
2026	2026-05-13	2026-10-09

Every Fixed Threshold

Fixed thresholds at Armells Creek Montana
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	34	71	2021	60
35 C (95 F): Days	33	30	2003	18
40 C (104 F): Days	17	5	2007	4
45 C (113 F): Days	1	0	n/a	1
90 F (32.2 C): Days	34	52	2011	41
100 F (37.8 C): Days	29	14	2003	7
110 F (43.3 C): Days	1	0	n/a	1
0 C (32 F): Ice days (max	34	76	1996	16
0 C (32 F): Frost days (min	34	177	2002	90
-10 C (14 F): Days with min	34	80	1996	20
-20 C (-4 F): Days with min	34	39	1996	7
-30 C (-22 F): Days with min	19	7	1996	4
20 C (68 F): Tropical nights (min	32	18	2007	9

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1992.

Download the Data

Data for Armells Creek Montana threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Armells Creek Montana Threshold Days by Year

Key Facts for Armells Creek Montana Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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