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COLD94
Coldest Since
National Cold Records
North Dakota · THREADEX · 1874–2026

Bismarck, ND

46.782°N, 100.757°W · station BISthr · 153 years of record
55°F
forecast low · Sep 2

7-Day Forecast

NWS NDFD forecast low temperature for Bismarck.
55°WED9/262°THU9/360°FRI9/466°SAT9/562°SUN9/657°MON9/758°TUE9/8

This Day in History

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

Ranks

#103 / 151
coldest Sep 2 in 151 yrs of record

Coldest Sep 2 ever

34°F
set in 1974

Mildest Sep 2 ever

66°F
set in 2012
Forecast low 55°F — 103rd coldest Sep 2 of 151 years · record 34°F (1974) · coldest since 2024.
1875: 56°F1876: 42°F1877: 44°F1878: 46°F1879: 53°F1880: 52°F1881: 56°F1882: 54°F1883: 40°F1884: 60°F1885: 42°F1886: 52°F1887: 53°F1888: 53°F1889: 45°F1890: 49°F1891: 49°F1892: 61°F1893: 47°F1894: 51°F1895: 55°F1896: 55°F1897: 62°F1898: 61°F1899: 48°F1900: 50°F1901: 60°F1902: 46°F1903: 46°F1904: 55°F1905: 45°F1906: 52°F1907: 43°F1908: 44°F1909: 56°F1910: 48°F1911: 50°F1912: 49°F1913: 52°F1914: 45°F1915: 61°F1916: 48°F1917: 35°F1918: 45°F1919: 56°F1920: 49°F1921: 50°F1922: 48°F1923: 61°F1924: 41°F1925: 61°F1926: 57°F1927: 54°F1928: 54°F1929: 63°F1930: 50°F1931: 51°F1932: 51°F1933: 48°F1934: 41°F1935: 48°F1936: 65°F1937: 62°F1938: 55°F1939: 63°F1940: 46°F1941: 55°F1942: 48°F1943: 56°F1944: 40°F1945: 46°F1946: 36°F1947: 49°F1948: 45°F1949: 44°F1950: 48°F1951: 56°F1952: 46°F1953: 57°F1954: 51°F1955: 51°F1956: 40°F1957: 58°F1958: 58°F1959: 55°F1960: 57°F1961: 44°F1962: 48°F1963: 56°F1964: 61°F1965: 46°F1966: 45°F1967: 52°F1968: 41°F1969: 55°F1970: 60°F1971: 50°F1972: 41°F1973: 57°F1974: 34°F1975: 50°F1976: 50°F1977: 43°F1978: 54°F1979: 46°F1980: 52°F1981: 54°F1982: 44°F1983: 60°F1984: 52°F1985: 59°F1986: 56°F1987: 49°F1988: 42°F1989: 53°F1990: 61°F1991: 64°F1992: 51°F1993: 45°F1994: 49°F1995: 53°F1996: 58°F1997: 41°F1998: 50°F1999: 53°F2000: 46°F2001: 53°F2002: 54°F2003: 56°F2004: 53°F2005: 43°F2006: 53°F2007: 50°F2008: 53°F2009: 57°F2010: 52°F2011: 47°F2012: 66°F2013: 48°F2014: 48°F2015: 61°F2016: 58°F2017: 50°F2018: 51°F2019: 60°F2020: 51°F2021: 55°F2022: 54°F2023: 57°F2024: 46°F2025: 56°F55° forecast303540455055606570188018901900191019201930194019501960197019801990200020102020
📖 Bismarck's full Climate Almanac →

The Numbers

Forecast low · Sep 255°F
Coldest this date since2024
This-date record34°F
This-date rank#103 of 151
Coldest at any time since2026
All-time record-45°F (1916)
Odds to tie/break0.0% (daily)
Period of record1874–2026

Record Book

The hottest and coldest ever recorded at Bismarck in each calendar month, and for the whole 1874–2026 record — with the year each was set.
MonthRecord HighRecord Low
Jan63°FJan 8, 2002-45°FJan 13, 1916
Feb73°FFeb 27, 2016-45°FFeb 16, 1936
Mar81°FMar 22, 1910-36°FMar 15, 1897
Apr93°FApr 21, 1980-12°FApr 1, 1975
May102°FMay 28, 193413°FMay 3, 1907
Jun111°FJun 29, 200230°FJun 2, 1969
Jul114°FJul 6, 193632°FJul 6, 1884
Aug109°FAug 5, 194132°FAug 31, 1895
Sep105°FSep 7, 193110°FSep 30, 1876
Oct95°FOct 1, 1953-10°FOct 26, 1919
Nov79°FNov 7, 1999-30°FNov 29, 1985
Dec66°FDec 6, 1939-43°FDec 31, 1967
All-time114°FJul 6, 1936-45°FJan 13, 1916

2026 Records So Far

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

Record Highs in 2026

5 broke
plus 5 tied — daily record highs set this year

Record Lows in 2026

0 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

83°F
record high minimum — the night it never cooled · Jul 11, 1936

Coldest high ever

-29°F
record low maximum — the day it never warmed · Jan 4, 1884
MonthWarmest lowColdest high
Jan35°FJan 3, 1927-29°FJan 4, 1884
Feb40°FFeb 27, 1932-26°FFeb 1, 1996
Mar49°FMar 31, 2012-8°FMar 2, 1888
Apr60°FApr 25, 189114°FApr 2, 1954
May77°FMay 30, 193431°FMay 2, 1967
Jun75°FJun 30, 192145°FJun 5, 1935
Jul83°FJul 11, 193655°FJul 25, 1918
Aug77°FAug 27, 188252°FAug 24, 1992
Sep75°FSep 3, 189735°FSep 25, 1934
Oct64°FOct 5, 201113°FOct 30, 1991
Nov48°FNov 6, 1977-9°FNov 28, 1896
Dec38°FDec 4, 1888-20°FDec 22, 1884
All-time83°FJul 11, 1936-29°FJan 4, 1884

Cold Streaks

Current run

0 days
consecutive days with a low ≤ 32°F

Longest ever

177 days
record run, ended Apr 20 1875

So far in 2026

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

Climate Normals

Normal low & low by month, from Bismarck's own 1991–2020 record. Today's normal low: 52°F · forecast is +3° vs normal.
Jan: 23°FJan: 2°FFeb: 28°FFeb: 7°FMar: 41°FMar: 19°FApr: 56°FApr: 30°FMay: 68°FMay: 42°FJun: 78°FJun: 53°FJul: 85°FJul: 58°FAug: 84°FAug: 56°FSep: 73°FSep: 46°FOct: 57°FOct: 33°FNov: 41°FNov: 19°FDec: 28°FDec: 8°FJFMAMJJASOND

Sun & Location

Sun & Daylight Today

Sunrise5:02 AM
Sunset6:23 PM
Solar noon11:43 AM
Daylight13h 20m · losing 23 min/wk
Local standard time (no DST), level horizon.

Location

46.78°N, 100.76°W

Nearby Stations

Mobridge, SD86 mi SAberdeen, SD145 mi SEWilliston, ND165 mi NWGrand Forks, ND185 mi EFargo, ND186 mi ESisseton, SD195 mi E

The Last 6 Weeks

Bismarck'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.
Bismarck, ND — last six weeks of daily low

2026 So Far

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

Every Day Since 1874

Each cell is one day's low at Bismarck, coloured by temperature — 153 years of record, so heat waves read as warm streaks and cold snaps as blue.
Bismarck, ND daily low heat map 1874–2026

Days Below the Mark

How many days a year hit a given low at Bismarck — counted through Sep 2 each year, so you can see whether 2026 is running cold. Pick a threshold:
115 days ≤32°F so far in 2026 — tied for the 26th most in 153 years. Normal for this point: 108. Record: 135 in 1907.

Share Card

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