19.719°N, 155.049°W · station ITOthr · 78 years of record
72°F
COLDEST SEP 4 SINCE 2025
forecast low · Sep 4
7-Day Forecast
NWS NDFD forecast low temperature for Hilo.
This Day in History
Every year's low on each of the next 7 forecast dates at Hilo — toggle a day below. The forecast line shows where it lands; the ringed bar is the coldest on record.
Ranks
#70 / 76
coldest Sep 2 in 76 yrs of record
Coldest Sep 2 ever
64°F
set in 1951
Mildest Sep 2 ever
75°F
set in 1994
Forecast low 73°F — 70th coldest Sep 2 of 76 years · record 64°F (1951) · coldest since 2025.
Ranks
#74 / 76
coldest Sep 3 in 76 yrs of record
Coldest Sep 3 ever
64°F
set in 1956
Mildest Sep 3 ever
75°F
set in 1994
Forecast low 73°F — 74th coldest Sep 3 of 76 years · record 64°F (1956) · coldest since 2025.
Ranks
#68 / 76
coldest Sep 4 in 76 yrs of record
Coldest Sep 4 ever
64°F
set in 1960
Mildest Sep 4 ever
75°F
set in 1994
Forecast low 72°F — 68th coldest Sep 4 of 76 years · record 64°F (1960) · coldest since 2025.
Ranks
#68 / 76
coldest Sep 5 in 76 yrs of record
Coldest Sep 5 ever
64°F
set in 1955
Mildest Sep 5 ever
74°F
set in 1990
Forecast low 72°F — 68th coldest Sep 5 of 76 years · record 64°F (1955) · coldest since 2025.
Ranks
#72 / 76
coldest Sep 6 in 76 yrs of record
Coldest Sep 6 ever
63°F
set in 1955
Mildest Sep 6 ever
75°F
set in 2018
Forecast low 73°F — 72nd coldest Sep 6 of 76 years · record 63°F (1955) · coldest since 2025.
Ranks
#76 / 76
coldest Sep 7 in 76 yrs of record
Coldest Sep 7 ever
64°F
set in 1970
Mildest Sep 7 ever
74°F
set in 1992
Forecast low 74°F — 76th coldest Sep 7 of 76 years · record 64°F (1970) · coldest since 2025.
Ranks
#74 / 76
coldest Sep 8 in 76 yrs of record
Coldest Sep 8 ever
62°F
set in 1955
Mildest Sep 8 ever
75°F
set in 2015
Forecast low 74°F — 74th coldest Sep 8 of 76 years · record 62°F (1955) · coldest since 2025.
The hottest and coldest ever recorded at Hilo in each calendar month, and for the whole 1949–2026 record — with the year each was set.
Month
Record High
Record Low
Jan
92°FJan 28, 1997
54°FJan 23, 1969
Feb
92°FFeb 20, 1968
53°FFeb 21, 1962
Mar
93°FMar 23, 1972
54°FMar 18, 1971
Apr
89°FApr 2, 1963
58°FApr 5, 2008
May
94°FMay 20, 1966
58°FMay 23, 2024
Jun
90°FJun 24, 1969
61°FJun 26, 1956
Jul
93°FJul 26, 2020
62°FJul 11, 1970
Aug
93°FAug 15, 1950
63°FAug 1, 1950
Sep
93°FSep 26, 2014
61°FSep 30, 1970
Oct
91°FOct 19, 1961
62°FOct 26, 1949
Nov
94°FNov 28, 2013
58°FNov 15, 1949
Dec
93°FDec 14, 1980
55°FDec 23, 1977
All-time
94°FMay 20, 1966
53°FFeb 21, 1962
2026 Records So Far
Records set or tied at Hilo so far this year — through Aug 30.
Record Highs in 2026
2 broke
plus 2 tied — daily record highs set this year
Record Lows in 2026
0 broke
plus 0 tied — daily record lows set this year
Record Warm Nights & Cold Days
Two more daily records, kept separate from the rankings: the warmest a night has ever stayed (record high minimum) and the coldest a day has ever gotten (record low maximum) — the flip side of the usual record high and low.
Warmest low ever
77°F
record high minimum — the night it never cooled · Aug 22, 2015
Coldest high ever
67°F
record low maximum — the day it never warmed · Mar 7, 1952
Month
Warmest low
Coldest high
Jan
74°FJan 10, 2020
68°FJan 13, 1979
Feb
72°FFeb 13, 1959
68°FFeb 8, 1955
Mar
73°FMar 14, 2026
67°FMar 7, 1952
Apr
74°FApr 6, 2018
68°FApr 11, 1999
May
73°FMay 21, 1966
70°FMay 3, 1952
Jun
74°FJun 28, 1968
73°FJun 11, 1950
Jul
76°FJul 24, 1994
74°FJul 20, 1989
Aug
77°FAug 22, 2015
76°FAug 28, 1958
Sep
76°FSep 10, 1992
75°FSep 19, 1983
Oct
77°FOct 11, 2015
73°FOct 27, 1951
Nov
74°FNov 3, 1967
72°FNov 18, 1949
Dec
74°FDec 6, 1988
69°FDec 21, 2021
All-time
77°FAug 22, 2015
67°FMar 7, 1952
Cold Streaks
Current run
0 days
consecutive days with a low ≤ 32°F
Longest ever
0 days
record run, ended —
So far in 2026
0 days
days with a low ≤ 32°F this year
Climate Normals
Normal low & low by month, from Hilo's own 1991–2020 record. Today's normal low: 70°F · forecast is +2° vs normal.