41.315°N, 122.317°W · station MHSthr · 79 years of record
35°F
SEP 5 RECORD
forecast low · Sep 5
7-Day Forecast
NWS NDFD forecast low temperature for Mount Shasta.
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.
Ranks
#18 / 77
coldest Sep 2 in 77 yrs of record
Coldest Sep 2 ever
37°F
set in 1964
Mildest Sep 2 ever
58°F
set in 1998
Forecast low 43°F — 18th coldest Sep 2 of 77 years · record 37°F (1964) · coldest since 2021.
Ranks
#26 / 77
coldest Sep 3 in 77 yrs of record
Coldest Sep 3 ever
31°F
set in 1964
Mildest Sep 3 ever
65°F
set in 1950
Forecast low 46°F — 26th coldest Sep 3 of 77 years · record 31°F (1964) · coldest since 2021.
Ranks
#8 / 77
coldest Sep 4 in 77 yrs of record
Coldest Sep 4 ever
38°F
set in 1964
Mildest Sep 4 ever
64°F
set in 2017
Forecast low 41°F — 8th coldest Sep 4 of 77 years · record 38°F (1964) · coldest since 2014.
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.
Ranks
#3 / 77
coldest Sep 6 in 77 yrs of record
Coldest Sep 6 ever
36°F
set in 2002
Mildest Sep 6 ever
60°F
set in 1976
Forecast low 38°F — 3rd coldest Sep 6 of 77 years · record 36°F (2002) · coldest since 2015.
Ranks
#6 / 77
coldest Sep 7 in 77 yrs of record
Coldest Sep 7 ever
34°F
set in 2002
Mildest Sep 7 ever
58°F
set in 1998
Forecast low 38°F — 6th coldest Sep 7 of 77 years · record 34°F (2002) · coldest since 2002.
Ranks
#6 / 77
coldest Sep 8 in 77 yrs of record
Coldest Sep 8 ever
34°F
set in 1978
Mildest Sep 8 ever
59°F
set in 2020
Forecast low 40°F — 6th coldest Sep 8 of 77 years · record 34°F (1978) · coldest since 2009.
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.
Month
Record High
Record Low
Jan
68°FJan 6, 2015
-2°FJan 15, 1950
Feb
71°FFeb 27, 1953
-3°FFeb 6, 1989
Mar
83°FMar 17, 2026
13°FMar 13, 1990
Apr
87°FApr 21, 2009
14°FApr 27, 1955
May
96°FMay 30, 1986
21°FMay 1, 1954
Jun
103°FJun 27, 2021
25°FJun 12, 1952
Jul
106°FJul 29, 2022
32°FJul 1, 1976
Aug
105°FAug 7, 1981
34°FAug 23, 1960
Sep
103°FSep 2, 1955
25°FSep 17, 1965
Oct
93°FOct 2, 1980
17°FOct 30, 2019
Nov
80°FNov 2, 1949
6°FNov 24, 1993
Dec
72°FDec 11, 1958
-13°FDec 22, 1990
All-time
106°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
Month
Warmest low
Coldest high
Jan
49°FJan 22, 1970
10°FJan 21, 1962
Feb
49°FFeb 5, 1963
22°FFeb 4, 1989
Mar
50°FMar 14, 2015
27°FMar 7, 1974
Apr
53°FApr 19, 1989
32°FApr 29, 1948
May
58°FMay 22, 1967
38°FMay 23, 1960
Jun
63°FJun 20, 1985
44°FJun 1, 1967
Jul
68°FJul 15, 1972
51°FJul 5, 1948
Aug
70°FAug 16, 2023
50°FAug 20, 1968
Sep
65°FSep 3, 1950
45°FSep 29, 1971
Oct
56°FOct 9, 1953
37°FOct 29, 1948
Nov
52°FNov 17, 1995
30°FNov 20, 1977
Dec
49°FDec 22, 1964
7°FDec 21, 1990
All-time
70°FAug 16, 2023
7°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.
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.
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.