48.559°N, 93.395°W · station INLthr · 130 years of record
81°F
HOTTEST SEP 5 SINCE 2012
forecast high · Sep 5
7-Day Forecast
NWS NDFD forecast high temperature for International Falls.
This Day in History
Every year's high on each of the next 7 forecast dates at International Falls — toggle a day below. The forecast line shows where it lands; the ringed bar is the hottest on record.
Ranks
#42 / 99
warmest Sep 1 in 99 yrs of record
Warmest Sep 1 ever
90°F
set in 1913
Coolest Sep 1 ever
56°F
set in 1974
Forecast high 75°F — 42nd warmest Sep 1 of 99 years · record 90°F (1913) · warmest since 2025.
Ranks
#26 / 100
warmest Sep 2 in 100 yrs of record
Warmest Sep 2 ever
92°F
set in 1971
Coolest Sep 2 ever
54°F
set in 1974
Forecast high 76°F — 26th warmest Sep 2 of 100 years · record 92°F (1971) · warmest since 2023.
Ranks
#21 / 100
warmest Sep 3 in 100 yrs of record
Warmest Sep 3 ever
87°F
set in 1897
Coolest Sep 3 ever
50°F
set in 1908
Forecast high 79°F — 21st warmest Sep 3 of 100 years · record 87°F (1897) · warmest since 2023.
Ranks
#25 / 100
warmest Sep 4 in 100 yrs of record
Warmest Sep 4 ever
91°F
set in 1922
Coolest Sep 4 ever
48°F
set in 1926
Forecast high 79°F — 25th warmest Sep 4 of 100 years · record 91°F (1922) · warmest since 2024.
Ranks
#19 / 100
warmest Sep 5 in 100 yrs of record
Warmest Sep 5 ever
90°F
set in 2007
Coolest Sep 5 ever
53°F
set in 1965
Forecast high 81°F — 19th warmest Sep 5 of 100 years · record 90°F (2007) · warmest since 2012.
Ranks
#26 / 99
warmest Sep 6 in 99 yrs of record
Warmest Sep 6 ever
93°F
set in 1913
Coolest Sep 6 ever
47°F
set in 1965
Forecast high 76°F — 26th warmest Sep 6 of 99 years · record 93°F (1913) · warmest since 2022.
Ranks
#46 / 100
warmest Sep 7 in 100 yrs of record
Warmest Sep 7 ever
96°F
set in 1906
Coolest Sep 7 ever
53°F
set in 1956
Forecast high 71°F — 46th warmest Sep 7 of 100 years · record 96°F (1906) · warmest since 2022.
The hottest and coldest ever recorded at International Falls in each calendar month, and for the whole 1897–2026 record — with the year each was set.
Month
Record High
Record Low
Jan
53°FJan 31, 2024
-55°FJan 6, 1909
Feb
58°FFeb 22, 2000
-48°FFeb 8, 1909
Mar
79°FMar 18, 2012
-38°FMar 1, 1962
Apr
93°FApr 27, 1952
-14°FApr 3, 1954
May
96°FMay 11, 2025
8°FMay 17, 1926
Jun
101°FJun 27, 1912
23°FJun 1, 1964
Jul
103°FJul 22, 1923
32°FJul 11, 1911
Aug
96°FAug 9, 1920
27°FAug 31, 1906
Sep
96°FSep 7, 1906
19°FSep 15, 2011
Oct
88°FOct 5, 1963
2°FOct 30, 1988
Nov
74°FNov 4, 2020
-32°FNov 28, 1985
Dec
56°FDec 1, 1962
-41°FDec 19, 1955
All-time
103°FJul 22, 1923
-55°FJan 6, 1909
2026 Records So Far
Records set or tied at International Falls 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
3 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
79°F
record high minimum — the night it never cooled · Jul 16, 1898
Coldest high ever
-29°F
record low maximum — the day it never warmed · Jan 6, 1909
Month
Warmest low
Coldest high
Jan
34°FJan 9, 2002
-29°FJan 6, 1909
Feb
39°FFeb 26, 1958
-25°FFeb 1, 1996
Mar
60°FMar 19, 2012
-9°FMar 1, 2014
Apr
60°FApr 19, 1987
7°FApr 2, 1954
May
70°FMay 12, 2025
26°FMay 2, 1967
Jun
71°FJun 25, 2001
45°FJun 3, 1920
Jul
79°FJul 16, 1898
53°FJul 2, 1992
Aug
77°FAug 5, 2001
49°FAug 10, 2004
Sep
73°FSep 8, 2002
35°FSep 25, 1926
Oct
69°FOct 2, 2023
20°FOct 27, 1919
Nov
53°FNov 8, 2020
-12°FNov 30, 1919
Dec
36°FDec 2, 1982
-22°FDec 31, 1967
All-time
79°FJul 16, 1898
-29°FJan 6, 1909
Hot Streaks
Current run
0 days
consecutive days with a high ≥ 90°F
Longest ever
9 days
record run, ended Jul 2 1921
So far in 2026
5 days
days with a high ≥ 90°F this year
Climate Normals
Normal high & low by month, from International Falls's own 1991–2020 record. Today's normal high: 71°F · forecast is +10° vs normal.
International Falls's observed daily high 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 International Falls's own record — the record high, the normal, and the full span ever seen. A shareable look at where the year stands.
Each cell is one day's high at International Falls, coloured by temperature — 130 years of record, so heat waves read as warm streaks and cold snaps as blue.
Days Above the Mark
How many days a year hit a given high at International Falls — counted through Sep 5 each year, so you can see whether 2026 is running hot. Pick a threshold:
5 days ≥90°F so far in 2026 — tied for the 29th most in 130 years. Normal for this point: 3. Record: 18 in 1921.
Share Card
A ready-to-share summary of International Falls's outlook — post it, or link this page.