46.870°N, 68.017°W · station CARthr · 88 years of record
45°F
COLDEST SEP 7 SINCE 2022
forecast low · Sep 7
7-Day Forecast
NWS NDFD forecast low temperature for Caribou.
This Day in History
Every year's low on each of the next 7 forecast dates at Caribou — toggle a day below. The forecast line shows where it lands; the ringed bar is the coldest on record.
Ranks
#35 / 87
coldest Sep 2 in 87 yrs of record
Coldest Sep 2 ever
36°F
set in 1991
Mildest Sep 2 ever
67°F
set in 1973
Forecast low 47°F — 35th coldest Sep 2 of 87 years · record 36°F (1991) · coldest since 2022.
Ranks
#48 / 87
coldest Sep 3 in 87 yrs of record
Coldest Sep 3 ever
36°F
set in 1994
Mildest Sep 3 ever
65°F
set in 1980
Forecast low 51°F — 48th coldest Sep 3 of 87 years · record 36°F (1994) · coldest since 2025.
Ranks
#77 / 87
coldest Sep 4 in 87 yrs of record
Coldest Sep 4 ever
30°F
set in 1976
Mildest Sep 4 ever
62°F
set in 1971
Forecast low 56°F — 77th coldest Sep 4 of 87 years · record 30°F (1976) · coldest since 2025.
Ranks
#66 / 87
coldest Sep 5 in 87 yrs of record
Coldest Sep 5 ever
32°F
set in 1963
Mildest Sep 5 ever
65°F
set in 1953
Forecast low 52°F — 66th coldest Sep 5 of 87 years · record 32°F (1963) · coldest since 2024.
Ranks
#36 / 87
coldest Sep 6 in 87 yrs of record
Coldest Sep 6 ever
34°F
set in 1942
Mildest Sep 6 ever
63°F
set in 1999
Forecast low 47°F — 36th coldest Sep 6 of 87 years · record 34°F (1942) · coldest since 2022.
Ranks
#26 / 87
coldest Sep 7 in 87 yrs of record
Coldest Sep 7 ever
33°F
set in 1962
Mildest Sep 7 ever
67°F
set in 1945
Forecast low 45°F — 26th coldest Sep 7 of 87 years · record 33°F (1962) · coldest since 2022.
Ranks
#57 / 87
coldest Sep 8 in 87 yrs of record
Coldest Sep 8 ever
33°F
set in 1986
Mildest Sep 8 ever
67°F
set in 1999
Forecast low 49°F — 57th coldest Sep 8 of 87 years · record 33°F (1986) · coldest since 2025.
The hottest and coldest ever recorded at Caribou in each calendar month, and for the whole 1939–2026 record — with the year each was set.
Month
Record High
Record Low
Jan
53°FJan 15, 1995
-37°FJan 16, 2009
Feb
59°FFeb 20, 1994
-41°FFeb 1, 1955
Mar
75°FMar 21, 2012
-28°FMar 2, 2001
Apr
86°FApr 27, 1990
-4°FApr 6, 2015
May
96°FMay 22, 1977
18°FMay 2, 1974
Jun
96°FJun 29, 1944
30°FJun 7, 1958
Jul
95°FJul 23, 1952
36°FJul 7, 1969
Aug
95°FAug 14, 1944
34°FAug 26, 1942
Sep
92°FSep 1, 2010
23°FSep 22, 1950
Oct
83°FOct 6, 2025
14°FOct 22, 1940
Nov
75°FNov 10, 2020
-8°FNov 30, 1995
Dec
60°FDec 1, 2020
-31°FDec 30, 1989
All-time
96°FJun 29, 1944
-41°FFeb 1, 1955
2026 Records So Far
Records set or tied at Caribou so far this year — through Aug 30.
Record Highs in 2026
3 broke
plus 2 tied — daily record highs set this year
Record Lows in 2026
1 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
71°F
record high minimum — the night it never cooled · Jul 31, 1970
Coldest high ever
-16°F
record low maximum — the day it never warmed · Jan 4, 1981
Month
Warmest low
Coldest high
Jan
41°FJan 4, 1950
-16°FJan 4, 1981
Feb
42°FFeb 20, 1994
-10°FFeb 1, 1955
Mar
46°FMar 22, 2012
-7°FMar 3, 1950
Apr
54°FApr 27, 1979
11°FApr 5, 1995
May
69°FMay 23, 1977
30°FMay 7, 1966
Jun
71°FJun 19, 2024
43°FJun 1, 1945
Jul
71°FJul 31, 1970
54°FJul 1, 1988
Aug
70°FAug 12, 1944
51°FAug 24, 1963
Sep
67°FSep 7, 1945
39°FSep 30, 1992
Oct
64°FOct 25, 2017
28°FOct 27, 1957
Nov
59°FNov 6, 2022
11°FNov 27, 1978
Dec
50°FDec 1, 2020
-10°FDec 19, 1942
All-time
71°FJul 31, 1970
-16°FJan 4, 1981
Cold Streaks
Current run
0 days
consecutive days with a low ≤ 32°F
Longest ever
148 days
record run, ended Apr 12 2001
So far in 2026
113 days
days with a low ≤ 32°F this year
Climate Normals
Normal low & low by month, from Caribou's own 1991–2020 record. Today's normal low: 48°F · forecast is -3° vs normal.