Jerome, ID: September

30 September 2026: September 2026 averaged 62.5°F in Jerome, ID, the warmest September since 2025, tied 46th warmest of 107 (with 2010, 1944 and 1919).

September 2026

Mean temperature: 62.5°F; Warmest since 2025; 46th warmest of 107
Precipitation: 0.43 in; Wettest since 2023; 36th wettest of 110

A normal September in Jerome, ID (1991 to 2020): a mean temperature of 62.2°F, between 59.8°F and 65.2°F in eight years of ten and 0.32 in of precipitation, between 0.02 in and 0.60 in in eight years of ten.

The mean temperature of every September in Jerome, ID since 1916: 62.5°F in 2026; the highest is 68.6°F, in 1990.

Normal range, 59.8 to 65.2°F

Every year, ranked, as a table

Every September in Jerome, ID from 1915 to 2026, ranked: the mean temperature, the mean high and the mean low from the warmest, the precipitation from the wettest; a year missing more than a tenth of its days is not ranked.

Year	Mean, °F	Rank	High, °F	Rank	Low, °F	Rank	Precipitation, in	Rank	Days missing
2026	62.5	46	76.2	72	48.8	17	0.43	36	0
2025	66.6	6	80.1	38	53	1	0.42	37	0
2024	64.8	18	79.5	46	50	11	0.21	63	0
2023	63.3	39	77.3	68	49.4	14	1.17	8	0
2022	66.9	5	82.4	18	51.4	4	0.07	80	0
2021	63.7	30	79.2	48	48.3	24	0.53	25	0
2020	65.2	13	81.8	22	48.5	22	0.07	80	0
2019	61.5	65	74.4	89	48.6	21	0.59	20	0
2018	63.5	34	78.9	49	48.2	25	trace	97	0
2017	61.8	56	75	83	48.7	19	0.73	17	0
2016	60	79	72.4	101	47.5	29	1.57	5	0
2015	63.5	34	78.2	59	48.8	17	0.57	22	0
2014	63.2	40	77	69	49.4	14	0.50	27	0
2013	63	43	75	83	51	5	0.50	27	0
2012	64.4	21	80	40	48.7	19	trace	97	0
2011	65.5	10	81.2	26	49.7	12	0.33	47	0
2010	62.5	46	77.6	64	47.4	30	0.04	88	0
2009	65.5	10	80.4	31	50.7	7	0.07	80	0
2008	60.8	73	76.4	71	45.2	51	0.18	69	0
2007	60	79	74.6	87	45.5	50	0.20	64	0
2006	60.2	77	75.1	82	45.2	51	0.40	40	0
2005	59.1	89	74.2	92	43.9	75	0.17	70	0
2004	59.3	86	73.1	99	45.6	49	0.45	35	0
2003	61.2	67	76.5	70	46	43	0.08	78	0
2002	61.1	69	74.7	85	47.6	27	0.50	27	1
2001	65	16	80.3	35	49.7	12	0.31	50	1
2000	60.1	78	74.1	94	46.1	41	0.42	37	2
1999	60	79	75.7	78	44.4	69	0.02	91	0
1998	65.2	13	78.7	54	51.7	3	0.54	24	0
1997	65.2	13	80.4	31	50.1	10	0.46	33	2
1996	59.3	86	76.2	72	42.3	92	0.09	76	0
1995	64.3	23	81.1	27	47.3	31	0.20	64	1
1994	64.7	20	83.5	10	45.9	46	0.36	44	0
1993	60	79	78.5	55	41.9	93	trace	97	2
1992	59.9	83	77.5	65	42.5	90	0.19	67	1
1991	63.9	27	80	40	47.7	26	0.88	14	0
1990	68.6	1	86.3	1	50.8	6	0.08	78	0
1989	62.3	54	79.9	45	44.6	64	0.11	75	0
1988	59.2	88	75.6	81	42.8	88	0.46	33	0
1987	64	24	83.2	13	44.8	58	trace	97	0
1986	56.9	101	71.2	103	42.5	90	0.80	15	0
1985	54.9	106	68.9	107	40.9	101	1.48	6	0
1984	59	90	76.1	75	41.8	94	0.09	76	0
1983	61.2	67	78.5	55	43.9	75	0.47	31	0
1982	59.8	84	73.6	96	45.7	48	0.91	13	1
1981	63.7	30	80.9	28	46.2	40	0.23	60	1
1980	61	71	76	76	46	43	1.17	8	0
1979	65.3	12	84.7	4	45.8	47	0.05	87	0
1978	58.7	92	74.2	92	43.2	83	2.14	3	0
1977	60.5	75	77.9	63	43.2	83	0.29	55	1
1976	63.2	40	78.9	49	47.6	27	1.01	11	2
1975	63.2	40	81.3	25	45.1	53	trace	97	0
1974	64.8	18	82.4	18	47.1	32	0.00	106	0
1973	62.4	50	78	60	46.8	35	0.47	31	0
1972	58.4	95	72.8	100	44.1	73	1.10	10	0
1971	58.2	96	74.7	85	41.7	97	0.31	50	0
1970	57.7	98	73.6	96	41.8	94	0.75	16	0
1969	65.8	9	83.1	15	48.5	22	0.23	60	0
1968	61.1	69	77.5	65	44.6	64	0.40	40	0
1967	67.4	4	84.6	5	50.2	9	0.32	48	0
1966	66.2	7	83.3	12	49	16	0.22	62	0
1965	55.3	105	70.9	105	39.8	105	0.52	26	0
1964	58.2	96	75.7	78	40.7	103	0.58	21	0
1963	67.6	3	83	16	52.2	2	0.65	19	0
1962	62.4	50	80.1	38	45	54	0.27	56	1
1961	56.5	102	71.2	103	41.8	94	2.19	2	0
1960	64.4	21	81.8	22	47	33	0.03	90	0
1959	58.6	93	72.2	102	44.9	56	2.50	1	0
1958	61.8	56	78.8	53	44.8	58	0.07	80	0
1957	63.7	30	82.7	17	44.7	61	0.02	91	0
1956	63	43	81.6	24	44.4	69	0.40	40	1
1955					43.4	81	0.19	67	6
1954	61.6	62	80.4	31	42.8	88	0.00	106	0
1953	63.9	27	83.6	8	44.5	68	0.00	106	1
1952	63.9	27	84.1	7	43.6	79	0.02	91	0
1951	61.8	56	80.4	31	43.2	83	0.01	95	0
1950							0.13	74	22
1949	64	24	83.6	8	44.3	71	0.16	72	0
1948	55.8	104	73.5	98	38.1	108	0.35	45	0
1947	62.4	50	80.2	37	44.3	71	0.17	70	1
1946	61.6	62	78.3	58	44.8	58	0.27	56	0
1945	58.6	93	75.8	77	41.4	99	0.31	50	0
1944	62.5	46	80.3	35	44.7	61	0.31	50	0
1943	64	24	84.4	6	43.6	79	trace	97	0
1942	63.6	33	83.2	13	44.1	73	0.07	80	0
1941	57.7	98	74.4	89	40.9	101	0.31	50	0
1940	62	55	77.5	65	46.5	38	1.97	4	0
1939	63.5	34	80.9	28	46.1	41	0.55	23	0
1938	68.4	2	86.2	2	50.5	8	trace	97	0
1937	65.9	8	85.5	3	46.3	39	0.27	56	0
1936	60.7	74	80	40	41.4	99	0.25	59	1
1935	65	16	83.5	10	46.6	37	0.00	106	0
1934	61	71	78	60	43.9	75	0.00	106	0
1933	61.3	66	79.5	46	43.2	83	0.20	64	0
1932	62.9	45	82.1	21	43.7	78	0.06	85	0
1931	62.4	50	80	40	44.7	61	0.32	48	0
1930	61.8	56	78.9	49	44.6	64	0.15	73	0
1929	57.2	100	74.3	91	40.6	104	0.39	43	1
1928	61.8	56	80.9	28	43	87	trace	97	2
1927	59	90	74.5	88	43.4	81	0.41	39	0
1926	56.3	103	73.9	95	38.6	107	0.04	88	0
1925	60.4	76	75.7	78	45	54	0.35	45	0
1924	63.5	34	82.4	18	44.6	64	0.02	91	0
1923	63.4	38	80	40	46.7	36	1.37	7	0
1922	61.7	61	78.4	57	44.9	56	0.01	95	0
1921	54.3	107	69.6	106	39.4	106	0.06	85	1
1920	61.6	62	76.2	72	47	33	0.48	30	1
1919	62.5	46	78.9	49	46	43	0.70	18	0
1918							0.95	12	6
1916	59.8	84	78	60	41.5	98	trace	97	0
1915									13

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
1990	68.6
1938	68.4
1963	67.6
1967	67.4
2022	66.9
2025	66.6
1966	66.2
1937	65.9
1969	65.8
2011	65.5
More years share the last value

Coldest
Year	Mean, °F
1921	54.3
1985	54.9
1965	55.3
1948	55.8
1926	56.3
1961	56.5
1986	56.9
1929	57.2
1970	57.7
1941	57.7

Wettest
Year	Precipitation, in
1959	2.50
1961	2.19
1978	2.14
1940	1.97
2016	1.57
1985	1.48
1923	1.37
2023	1.17
1980	1.17
1972	1.10

Driest
Year	Precipitation, in
1974	0.00
1954	0.00
1953	0.00
1935	0.00
1934	0.00
2018	trace
2012	trace
1993	trace
1987	trace
1975	trace
More years share the last value

The hottest, coldest and wettest days

Hottest day: 87°F; 24 September 2026
Coldest night: 40°F; 15 September 2026
Wettest day: 0.27 in; 1 September 2026

Every month, season and year

Months

Seasons

Years

Jerome, ID the day's answers

All-time records

Every answer in words

September 2026 brought 0.43 in of precipitation in Jerome, ID, the wettest September since 2023, 36th wettest of 110.
The hottest day of September 2026 in Jerome, ID: 87°F on Thursday 24 September 2026.
The coldest night of September 2026 in Jerome, ID: a low of 40°F on Tuesday 15 September 2026.
The wettest day of September 2026 in Jerome, ID: 0.27 in on Tuesday 1 September 2026.