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Hawaii · THREADEX · 1949–2026

Hilo, HI

19.719°N, 155.049°W · station ITOthr · 78 years of record
72°F
forecast low · Sep 4

7-Day Forecast

NWS NDFD forecast low temperature for Hilo.
73°WED9/273°THU9/372°FRI9/472°SAT9/573°SUN9/674°MON9/774°TUE9/8

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

#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.
1950: 68°F1951: 66°F1952: 68°F1953: 67°F1954: 70°F1955: 67°F1956: 67°F1957: 67°F1958: 67°F1959: 68°F1960: 64°F1961: 64°F1962: 69°F1963: 69°F1964: 68°F1965: 68°F1966: 73°F1967: 67°F1968: 70°F1969: 69°F1970: 70°F1971: 67°F1972: 67°F1973: 65°F1974: 68°F1975: 66°F1976: 69°F1977: 67°F1978: 70°F1979: 67°F1980: 66°F1981: 69°F1982: 71°F1983: 67°F1984: 67°F1985: 68°F1986: 72°F1987: 71°F1988: 68°F1989: 69°F1990: 72°F1991: 73°F1992: 72°F1993: 70°F1994: 75°F1995: 71°F1996: 71°F1997: 71°F1998: 71°F1999: 66°F2000: 68°F2001: 69°F2002: 69°F2003: 69°F2004: 68°F2005: 68°F2006: 66°F2007: 70°F2008: 65°F2009: 66°F2010: 68°F2011: 66°F2012: 67°F2013: 67°F2014: 67°F2015: 71°F2016: 75°F2017: 68°F2018: 74°F2019: 71°F2020: 73°F2021: 71°F2022: 70°F2023: 67°F2024: 71°F2025: 70°F72° forecast6065707519501960197019801990200020102020
📖 Hilo's full Climate Almanac →

The Numbers

Forecast low · Sep 472°F
Coldest this date since2025
This-date record64°F
This-date rank#68 of 76
Coldest at any time since2026
All-time record53°F (1962)
Odds to tie/break0.0% (daily)
Period of record1949–2026

Record Book

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.
MonthRecord HighRecord Low
Jan92°FJan 28, 199754°FJan 23, 1969
Feb92°FFeb 20, 196853°FFeb 21, 1962
Mar93°FMar 23, 197254°FMar 18, 1971
Apr89°FApr 2, 196358°FApr 5, 2008
May94°FMay 20, 196658°FMay 23, 2024
Jun90°FJun 24, 196961°FJun 26, 1956
Jul93°FJul 26, 202062°FJul 11, 1970
Aug93°FAug 15, 195063°FAug 1, 1950
Sep93°FSep 26, 201461°FSep 30, 1970
Oct91°FOct 19, 196162°FOct 26, 1949
Nov94°FNov 28, 201358°FNov 15, 1949
Dec93°FDec 14, 198055°FDec 23, 1977
All-time94°FMay 20, 196653°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
MonthWarmest lowColdest high
Jan74°FJan 10, 202068°FJan 13, 1979
Feb72°FFeb 13, 195968°FFeb 8, 1955
Mar73°FMar 14, 202667°FMar 7, 1952
Apr74°FApr 6, 201868°FApr 11, 1999
May73°FMay 21, 196670°FMay 3, 1952
Jun74°FJun 28, 196873°FJun 11, 1950
Jul76°FJul 24, 199474°FJul 20, 1989
Aug77°FAug 22, 201576°FAug 28, 1958
Sep76°FSep 10, 199275°FSep 19, 1983
Oct77°FOct 11, 201573°FOct 27, 1951
Nov74°FNov 3, 196772°FNov 18, 1949
Dec74°FDec 6, 198869°FDec 21, 2021
All-time77°FAug 22, 201567°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.
Jan: 80°FJan: 64°FFeb: 80°FFeb: 64°FMar: 80°FMar: 65°FApr: 80°FApr: 66°FMay: 82°FMay: 67°FJun: 83°FJun: 68°FJul: 84°FJul: 70°FAug: 84°FAug: 70°FSep: 84°FSep: 70°FOct: 84°FOct: 69°FNov: 82°FNov: 68°FDec: 80°FDec: 66°FJFMAMJJASOND

Sun & Location

Sun & Daylight Today

Sunrise6:05 AM
Sunset6:35 PM
Solar noon12:20 PM
Daylight12h 31m · losing 7 min/wk
Local standard time (no DST), level horizon.

Location

19.72°N, 155.05°WHawaii

Nearby Stations

Kahului, HI120 mi NWHonolulu, HI217 mi NWLihue, HI317 mi NWSan Francisco Airport, CA2317 mi NEUkiah, CA2319 mi NEEureka, CA2328 mi NE

The Last 6 Weeks

Hilo's observed daily low for the last six weeks — a white ring marks any day that broke or tied its daily record for that date.
Hilo, HI — last six weeks of daily low

2026 So Far

Every day this year against Hilo's own record — the record low, the normal, and the full span ever seen. A shareable look at where the year stands.
Hilo, HI — 2026 daily low trace
Download year chart

Every Day Since 1949

Each cell is one day's low at Hilo, coloured by temperature — 78 years of record, so heat waves read as warm streaks and cold snaps as blue.
Hilo, HI daily low heat map 1949–2026

Days Below the Mark

How many days a year hit a given low at Hilo — counted through Sep 4 each year, so you can see whether 2026 is running cold. Pick a threshold:
No days ≤32°F yet in 2026. Normal for this point: 0. Record: 0 in 1949.

Share Card

A ready-to-share summary of Hilo's outlook — post it, or link this page.
Hilo, HI cold share card
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