42.147°N, 121.725°W · station LMTthr · 130 years of record
32°F
COLDEST SEP 5 SINCE 2015
forecast low · Sep 5
7-Day Forecast
NWS NDFD forecast low temperature for Klamath Falls.
This Day in History
Every year's low on each of the next 7 forecast dates at Klamath Falls — toggle a day below. The forecast line shows where it lands; the ringed bar is the coldest on record.
Ranks
#30 / 121
coldest Sep 2 in 121 yrs of record
Coldest Sep 2 ever
30°F
set in 1907
Mildest Sep 2 ever
63°F
set in 1950
Forecast low 42°F — 30th coldest Sep 2 of 121 years · record 30°F (1907) · coldest since 2023.
Ranks
#64 / 121
coldest Sep 3 in 121 yrs of record
Coldest Sep 3 ever
29°F
set in 1964
Mildest Sep 3 ever
63°F
set in 1955
Forecast low 46°F — 64th coldest Sep 3 of 121 years · record 29°F (1964) · coldest since 2024.
Ranks
#16 / 122
coldest Sep 4 in 122 yrs of record
Coldest Sep 4 ever
33°F
set in 2016
Mildest Sep 4 ever
61°F
set in 1991
Forecast low 39°F — 16th coldest Sep 4 of 122 years · record 33°F (2016) · coldest since 2024.
Ranks
#2 / 122
coldest Sep 5 in 122 yrs of record
Coldest Sep 5 ever
29°F
set in 2015
Mildest Sep 5 ever
60°F
set in 1931
Forecast low 32°F — 2nd coldest Sep 5 of 122 years · record 29°F (2015) · coldest since 2015.
Ranks
#10 / 122
coldest Sep 6 in 122 yrs of record
Coldest Sep 6 ever
25°F
set in 1973
Mildest Sep 6 ever
61°F
set in 1986
Forecast low 35°F — 10th coldest Sep 6 of 122 years · record 25°F (1973) · coldest since 2016.
Ranks
#10 / 122
coldest Sep 7 in 122 yrs of record
Coldest Sep 7 ever
31°F
set in 1999
Mildest Sep 7 ever
60°F
set in 1908
Forecast low 34°F — 10th coldest Sep 7 of 122 years · record 31°F (1999) · coldest since 2016.
Ranks
#6 / 123
coldest Sep 8 in 123 yrs of record
Coldest Sep 8 ever
31°F
set in 2002
Mildest Sep 8 ever
58°F
set in 1963
Forecast low 34°F — 6th coldest Sep 8 of 123 years · record 31°F (2002) · coldest since 2002.
The hottest and coldest ever recorded at Klamath Falls in each calendar month, and for the whole 1897–2026 record — with the year each was set.
Month
Record High
Record Low
Jan
78°FJan 3, 1900
-19°FJan 5, 2017
Feb
69°FFeb 24, 1995
-14°FFeb 12, 2025
Mar
77°FMar 12, 1934
-5°FMar 1, 1917
Apr
87°FApr 27, 1987
10°FApr 16, 1963
May
98°FMay 30, 1986
17°FMay 6, 1968
Jun
103°FJun 28, 2021
23°FJun 4, 2001
Jul
103°FJul 22, 1905
22°FJul 3, 2000
Aug
104°FAug 7, 1972
28°FAug 30, 1908
Sep
103°FSep 9, 1902
20°FSep 24, 1973
Oct
92°FOct 3, 1905
8°FOct 31, 2002
Nov
74°FNov 1, 1965
-4°FNov 24, 2010
Dec
63°FDec 1, 1904
-20°FDec 8, 2013
All-time
104°FAug 7, 1972
-20°FDec 8, 2013
2026 Records So Far
Records set or tied at Klamath Falls so far this year — through Aug 28.
Record Highs in 2026
5 broke
plus 1 tied — daily record highs set this year
Monthly high record this year: Mar (77°F)
Record Lows in 2026
2 broke
plus 1 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
73°F
record high minimum — the night it never cooled · Aug 8, 1981
Coldest high ever
3°F
record low maximum — the day it never warmed · Dec 21, 1990
Month
Warmest low
Coldest high
Jan
47°FJan 21, 1981
7°FJan 3, 1912
Feb
46°FFeb 6, 1963
8°FFeb 4, 1989
Mar
49°FMar 20, 1997
25°FMar 2, 1917
Apr
52°FApr 29, 1981
32°FApr 11, 1911
May
66°FMay 29, 1986
39°FMay 8, 2022
Jun
72°FJun 23, 1992
42°FJun 1, 1898
Jul
71°FJul 21, 1994
52°FJul 5, 1909
Aug
73°FAug 8, 1981
55°FAug 15, 1976
Sep
63°FSep 2, 1950
43°FSep 29, 1971
Oct
56°FOct 3, 1917
29°FOct 30, 1935
Nov
49°FNov 4, 1958
21°FNov 26, 1985
Dec
46°FDec 21, 2014
3°FDec 21, 1990
All-time
73°FAug 8, 1981
3°FDec 21, 1990
Cold Streaks
Current run
0 days
consecutive days with a low ≤ 32°F
Longest ever
97 days
record run, ended Mar 26 1917
So far in 2026
110 days
days with a low ≤ 32°F this year
Climate Normals
Normal low & low by month, from Klamath Falls's own 1991–2020 record. Today's normal low: 43°F · forecast is -12° vs normal.
Klamath Falls'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 Klamath Falls's own record — the record low, the normal, and the full span ever seen. A shareable look at where the year stands.
Each cell is one day's low at Klamath Falls, coloured by temperature — 130 years of record, so heat waves read as warm streaks and cold snaps as blue.
Days Below the Mark
How many days a year hit a given low at Klamath Falls — counted through Sep 5 each year, so you can see whether 2026 is running cold. Pick a threshold:
110 days ≤32°F so far in 2026 — tied for the 29th most in 130 years. Normal for this point: 98. Record: 131 in 1964.
Share Card
A ready-to-share summary of Klamath Falls's outlook — post it, or link this page.