Hilo, HI: Summer

31 August 2026: Summer 2026 averaged 77.1°F in Hilo, HI, the warmest summer since 2020, tied 13th warmest of 77 (with 1977).

Summer 2026

Mean temperature: 77.1°F; Warmest since 2020; 13th warmest of 77
Precipitation: 43.52 in; Wettest since 2018; 6th wettest of 77

A normal summer in Hilo, HI (1991 to 2020): a mean temperature of 76.4°F, between 75.1°F and 77.9°F in eight years of ten and 25.10 in of precipitation, between 17.19 in and 43.53 in in eight years of ten.

The mean temperature of every summer in Hilo, HI since 1950: 77.1°F in 2026; the highest is 78.7°F, in 2015.

Normal range, 75.1 to 77.9°F

Every year, ranked, as a table

Every summer in Hilo, HI from 1950 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	77.1	13	83.2	37	71	6	43.52	6	0
2025	76.9	17	84	21	69.8	16	10.39	76	5
2024	76.8	18	83.8	24	69.8	16	20.28	48	0
2023	76.7	21	83.8	24	69.6	20	14.70	70	0
2022	76	34	83.3	34	68.7	38	17.96	59	0
2021	76.7	21	83.9	22	69.5	22	19.12	52	0
2020	78.4	2	85.6	3	71.3	3	13.98	71	0
2019	78.4	2	85.7	2	71.2	4	22.86	41	0
2018	77.7	5	83.8	24	71.6	1	65.14	1	0
2017	77	15	84.2	18	69.9	13	19.40	50	0
2016	77.8	4	84.3	14	71.2	4	43.19	7	0
2015	78.7	1	85.9	1	71.4	2	30.49	25	0
2014	75.9	41	82.9	44	68.8	37	33.37	19	0
2013	76.3	29	83.5	30	69.1	29	17.84	60	0
2012	74.9	64	81.8	66	68	54	21.21	44	0
2011	75.1	58	82.1	61	68	54	20.30	47	0
2010	75.4	50	82.7	51	68.2	48	13.55	73	0
2009	75.7	45	83	40	68.4	43	18.43	55	0
2008	76.1	32	84.2	18	67.9	57	12.23	74	0
2007	76.6	24	84.8	9	68.4	43	21.41	43	0
2006	76	34	82.9	44	69	31	17.70	61	0
2005	76.6	24	83.8	24	69.4	24	27.15	32	0
2004	77.3	10	85	8	69.7	19	17.55	62	0
2003	77	15	84.3	14	69.8	16	24.36	37	0
2002	76.3	29	83.1	38	69.5	22	27.79	30	0
2001	75.1	58	82.1	61	68.2	48	18.08	58	0
2000	75.7	45	82.2	59	69.2	26	31.89	21	0
1999	74	75	81	75	66.9	74	18.34	57	0
1998	74.9	64	81.2	73	68.6	39	25.84	34	0
1997	77.3	10	84.6	10	70.1	10	46.83	3	0
1996	77.3	10	85.2	5	69.4	24	28.32	28	0
1995	77.5	8	85.1	7	69.9	13	34.41	17	0
1994	77.6	6	84.4	12	70.8	7	39.58	10	0
1993	76	34	83	40	69	31	36.44	14	0
1992	76.5	28	83.4	32	69.6	20	40.61	8	0
1991	75.9	41	82.7	51	69	31	46.59	4	0
1990	76	34	82.8	48	69.2	26	28.62	27	0
1989	74.9	64	81.6	69	68.3	46	38.78	11	0
1988	75.5	47	82.4	57	68.5	41	27.17	31	0
1987	76.7	21	83.4	32	69.9	13	34.86	16	0
1986	77.6	6	85.3	4	70	12	30.92	24	0
1985	75.1	58	81.7	67	68.6	39	18.37	56	0
1984	75	61	81.9	65	68.1	52	20.27	49	0
1983	74.8	67	81.4	72	68.1	52	18.63	54	0
1982	76.6	24	82.9	44	70.4	8	60.07	2	0
1981	76	34	82.9	44	69.2	26	15.72	67	0
1980	76.8	18	84.4	12	69.1	29	27.07	33	0
1979	74.8	67	82.1	61	67.5	67	24.03	38	0
1978	76.8	18	83.5	30	70.1	10	35.71	15	0
1977	77.1	13	85.2	5	69	31	16.42	64	0
1976	74.8	67	81.5	71	68	54	13.56	72	0
1975	75	61	82.1	61	67.8	61	16.16	66	0
1974	76.1	32	83.9	22	68.2	48	16.82	63	0
1973	75.5	47	83.3	34	67.8	61	11.63	75	0
1972	75.8	43	83.1	38	68.4	43	22.42	42	0
1971	76	34	84.3	14	67.8	61	9.58	77	0
1970	74.2	74	82.2	59	66.3	76	38.40	12	0
1969	76	34	84.2	18	67.9	57	32.01	20	0
1968	76.6	24	84.3	14	69	31	25.77	35	0
1967	77.4	9	84.6	10	70.2	9	39.84	9	0
1966	76.2	31	83.6	29	68.9	36	27.97	29	0
1965	75	61	83	40	67.1	71	20.79	45	0
1964	75.2	56	83	40	67.3	70	20.73	46	0
1963	75.2	56	82.7	51	67.6	66	30.97	23	0
1962	74.8	67	82.6	54	66.9	74	15.41	68	0
1961	75.4	50	83.3	34	67.5	67	18.88	53	0
1960	75.3	54	82.8	48	67.8	61	29.27	26	0
1959	75.8	43	83.7	28	67.9	57	16.17	65	0
1958	75.5	47	82.5	55	68.5	41	37.98	13	0
1957	75.4	50	82.4	57	68.3	46	44.43	5	0
1956	74.4	73	81.7	67	67	73	33.92	18	0
1955	72.7	77	79.8	77	65.6	77	23.96	39	0
1954	75.3	54	82.5	55	68.2	48	31.23	22	0
1953	74.5	71	81.2	73	67.8	61	15.26	69	0
1952	73.6	76	80.2	76	67.1	71	23.11	40	0
1951	75.4	50	82.8	48	67.9	57	25.64	36	0
1950	74.5	71	81.6	69	67.4	69	19.34	51	0

Warmest, coldest, wettest and driest

Warmest
Year	Mean, °F
2015	78.7
2020	78.4
2019	78.4
2016	77.8
2018	77.7
1994	77.6
1986	77.6
1995	77.5
1967	77.4
2004	77.3
More years share the last value

Coldest
Year	Mean, °F
1955	72.7
1952	73.6
1999	74
1970	74.2
1956	74.4
1953	74.5
1950	74.5
1983	74.8
1979	74.8
1976	74.8
More years share the last value

Wettest
Year	Precipitation, in
2018	65.14
1982	60.07
1997	46.83
1991	46.59
1957	44.43
2026	43.52
2016	43.19
1992	40.61
1967	39.84
1994	39.58

Driest
Year	Precipitation, in
1971	9.58
2025	10.39
1973	11.63
2008	12.23
2010	13.55
1976	13.56
2020	13.98
2023	14.70
1953	15.26
1962	15.41

The hottest, coldest and wettest days

Hottest day: 87°F; 21 August 2026, 30 July 2026, 29 July 2026
Coldest night: 66°F; 14 June 2026, 13 June 2026
Wettest day: 6.82 in; 15 August 2026

Every month, season and year

Months

Seasons

Years

Hilo, HI the day's answers

All-time records

Every answer in words

Summer 2026 brought 43.52 in of precipitation in Hilo, HI, the wettest summer since 2018, 6th wettest of 77.
The hottest day of summer 2026 in Hilo, HI: 87°F on Friday 21 August 2026, Thursday 30 July 2026 and Wednesday 29 July 2026.
The coldest night of summer 2026 in Hilo, HI: a low of 66°F on Sunday 14 June 2026 and Saturday 13 June 2026.
The wettest day of summer 2026 in Hilo, HI: 6.82 in on Saturday 15 August 2026.