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California · THREADEX · 1948–2026

Mount Shasta, CA

41.315°N, 122.317°W · station MHSthr · 79 years of record
35°F
forecast low · Sep 5

7-Day Forecast

NWS NDFD forecast low temperature for Mount Shasta.
43°WED9/246°THU9/341°FRI9/435°SAT9/538°SUN9/638°MON9/740°TUE9/8

This Day in History

Every year's low on each of the next 7 forecast dates at Mount Shasta — toggle a day below. The forecast line shows where it lands; the ringed bar is the coldest on record.
DAILY RECORD

Ranks

#1 / 77
coldest Sep 5 in 77 yrs of record

Coldest Sep 5 ever

38°F
set in 1954

Mildest Sep 5 ever

62°F
set in 1988
Forecast low 35°F — 1st coldest Sep 5 of 77 years · record 38°F (1954) · a daily record.
1948: 48°F1949: 45°F1950: 44°F1951: 46°F1952: 51°F1953: 50°F1954: 38°F1955: 59°F1956: 43°F1957: 47°F1958: 46°F1959: 48°F1960: 42°F1961: 47°F1962: 48°F1963: 51°F1964: 40°F1965: 42°F1966: 53°F1967: 48°F1968: 45°F1969: 42°F1970: 43°F1971: 47°F1972: 52°F1973: 46°F1974: 48°F1975: 49°F1976: 50°F1977: 48°F1978: 47°F1979: 43°F1980: 44°F1981: 52°F1982: 51°F1983: 51°F1984: 45°F1985: 54°F1986: 51°F1988: 62°F1989: 43°F1990: 43°F1991: 52°F1992: 51°F1993: 49°F1994: 44°F1995: 39°F1996: 44°F1997: 47°F1998: 56°F1999: 45°F2000: 42°F2001: 49°F2002: 42°F2003: 49°F2004: 48°F2005: 43°F2006: 45°F2007: 50°F2008: 51°F2009: 48°F2010: 48°F2011: 45°F2012: 45°F2013: 48°F2014: 42°F2015: 41°F2016: 46°F2017: 57°F2018: 46°F2019: 54°F2020: 53°F2021: 43°F2022: 52°F2023: 46°F2024: 47°F2025: 48°F35° forecast3540455055606519501960197019801990200020102020
📖 Mount Shasta's full Climate Almanac →

The Numbers

Forecast low · Sep 535°F
Coldest this date sinceon record
This-date record38°F
This-date rank#1 of 77
Coldest at any time since2026
All-time record-13°F (1990)
Odds to tie/break2.0% (daily)
Period of record1948–2026

Record Book

The hottest and coldest ever recorded at Mount Shasta in each calendar month, and for the whole 1948–2026 record — with the year each was set.
MonthRecord HighRecord Low
Jan68°FJan 6, 2015-2°FJan 15, 1950
Feb71°FFeb 27, 1953-3°FFeb 6, 1989
Mar83°FMar 17, 202613°FMar 13, 1990
Apr87°FApr 21, 200914°FApr 27, 1955
May96°FMay 30, 198621°FMay 1, 1954
Jun103°FJun 27, 202125°FJun 12, 1952
Jul106°FJul 29, 202232°FJul 1, 1976
Aug105°FAug 7, 198134°FAug 23, 1960
Sep103°FSep 2, 195525°FSep 17, 1965
Oct93°FOct 2, 198017°FOct 30, 2019
Nov80°FNov 2, 19496°FNov 24, 1993
Dec72°FDec 11, 1958-13°FDec 22, 1990
All-time106°FJul 29, 2022-13°FDec 22, 1990

2026 Records So Far

Records set or tied at Mount Shasta so far this year — through Aug 30.

Record Highs in 2026

6 broke
plus 3 tied — daily record highs set this year
Monthly high record this year: Mar (83°F)

Record Lows in 2026

2 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

70°F
record high minimum — the night it never cooled · Aug 16, 2023

Coldest high ever

7°F
record low maximum — the day it never warmed · Dec 21, 1990
MonthWarmest lowColdest high
Jan49°FJan 22, 197010°FJan 21, 1962
Feb49°FFeb 5, 196322°FFeb 4, 1989
Mar50°FMar 14, 201527°FMar 7, 1974
Apr53°FApr 19, 198932°FApr 29, 1948
May58°FMay 22, 196738°FMay 23, 1960
Jun63°FJun 20, 198544°FJun 1, 1967
Jul68°FJul 15, 197251°FJul 5, 1948
Aug70°FAug 16, 202350°FAug 20, 1968
Sep65°FSep 3, 195045°FSep 29, 1971
Oct56°FOct 9, 195337°FOct 29, 1948
Nov52°FNov 17, 199530°FNov 20, 1977
Dec49°FDec 22, 19647°FDec 21, 1990
All-time70°FAug 16, 20237°FDec 21, 1990

Cold Streaks

Current run

0 days
consecutive days with a low ≤ 32°F

Longest ever

97 days
record run, ended Feb 20 1949

So far in 2026

58 days
days with a low ≤ 32°F this year

Climate Normals

Normal low & low by month, from Mount Shasta's own 1991–2020 record. Today's normal low: 47°F · forecast is -12° vs normal.
Jan: 45°FJan: 28°FFeb: 48°FFeb: 29°FMar: 53°FMar: 32°FApr: 60°FApr: 35°FMay: 69°FMay: 41°FJun: 77°FJun: 47°FJul: 87°FJul: 52°FAug: 86°FAug: 50°FSep: 79°FSep: 44°FOct: 66°FOct: 38°FNov: 52°FNov: 31°FDec: 44°FDec: 27°FJFMAMJJASOND

Sun & Location

Sun & Daylight Today

Sunrise5:35 AM
Sunset6:42 PM
Solar noon12:09 PM
Daylight13h 07m · losing 18 min/wk
Local standard time (no DST), level horizon.

Location

41.31°N, 122.32°W

Nearby Stations

Redding, CA55 mi SKlamath Falls, OR65 mi NEMedford, OR78 mi NWAlturas, CA91 mi EEureka, CA102 mi WCrescent City, CA104 mi W

The Last 6 Weeks

Mount Shasta'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.
Mount Shasta, CA — last six weeks of daily low

2026 So Far

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

Every Day Since 1948

Each cell is one day's low at Mount Shasta, coloured by temperature — 79 years of record, so heat waves read as warm streaks and cold snaps as blue.
Mount Shasta, CA daily low heat map 1948–2026

Days Below the Mark

How many days a year hit a given low at Mount Shasta — counted through Sep 5 each year, so you can see whether 2026 is running cold. Pick a threshold:
58 days ≤32°F so far in 2026 — tied for the 72nd most in 79 years. Normal for this point: 79. Record: 111 in 1964.

Share Card

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