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North Dakota · THREADEX · 1874–2026

Bismarck, ND

46.782°N, 100.757°W · station BISthr · 153 years of record
93°F
forecast high · Sep 4

7-Day Forecast

NWS NDFD forecast high temperature for Bismarck.
79°TUE9/184°WED9/290°THU9/393°FRI9/490°SAT9/581°SUN9/679°MON9/7

This Day in History

Every year's high 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 hottest on record.

Ranks

#18 / 151
warmest Sep 4 in 151 yrs of record

Warmest Sep 4 ever

100°F
set in 1948

Coolest Sep 4 ever

55°F
set in 1999
Forecast high 93°F — 18th warmest Sep 4 of 151 years · record 100°F (1948) · warmest since 2023.
1875: 73°F1876: 71°F1877: 72°F1878: 76°F1879: 76°F1880: 75°F1881: 73°F1882: 88°F1883: 68°F1884: 68°F1885: 56°F1886: 85°F1887: 77°F1888: 74°F1889: 62°F1890: 79°F1891: 79°F1892: 65°F1893: 83°F1894: 80°F1895: 72°F1896: 75°F1897: 84°F1898: 69°F1899: 81°F1900: 90°F1901: 82°F1902: 77°F1903: 67°F1904: 78°F1905: 72°F1906: 93°F1907: 75°F1908: 83°F1909: 67°F1910: 72°F1911: 63°F1912: 93°F1913: 96°F1914: 80°F1915: 87°F1916: 93°F1917: 76°F1918: 60°F1919: 67°F1920: 64°F1921: 69°F1922: 98°F1923: 82°F1924: 89°F1925: 73°F1926: 65°F1927: 89°F1928: 70°F1929: 64°F1930: 87°F1931: 99°F1932: 71°F1933: 96°F1934: 75°F1935: 66°F1936: 86°F1937: 71°F1938: 90°F1939: 85°F1940: 98°F1941: 72°F1942: 81°F1943: 80°F1944: 78°F1945: 96°F1946: 90°F1947: 93°F1948: 100°F1949: 72°F1950: 92°F1951: 71°F1952: 86°F1953: 65°F1954: 82°F1955: 79°F1956: 59°F1957: 69°F1958: 69°F1959: 89°F1960: 91°F1961: 82°F1962: 67°F1963: 77°F1964: 71°F1965: 61°F1966: 78°F1967: 84°F1968: 61°F1969: 74°F1970: 95°F1971: 68°F1972: 78°F1973: 73°F1974: 80°F1975: 72°F1976: 79°F1977: 78°F1978: 100°F1979: 85°F1980: 75°F1981: 76°F1982: 89°F1983: 84°F1984: 77°F1985: 74°F1986: 70°F1987: 67°F1988: 83°F1989: 76°F1990: 82°F1991: 84°F1992: 77°F1993: 62°F1994: 79°F1995: 88°F1996: 87°F1997: 82°F1998: 94°F1999: 55°F2000: 67°F2001: 97°F2002: 91°F2003: 91°F2004: 76°F2005: 95°F2006: 79°F2007: 89°F2008: 69°F2009: 78°F2010: 76°F2011: 70°F2012: 87°F2013: 83°F2014: 69°F2015: 89°F2016: 81°F2017: 75°F2018: 74°F2019: 82°F2020: 75°F2021: 81°F2022: 91°F2023: 93°F2024: 92°F2025: 71°F93° forecast556065707580859095100188018901900191019201930194019501960197019801990200020102020
📖 Bismarck's full Climate Almanac →

The Numbers

Forecast high · Sep 493°F
Hottest this date since2023
This-date record100°F
This-date rank#18 of 151
Hottest at any time since2026
All-time record114°F (1936)
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

Hot Streaks

Current run

0 days
consecutive days with a high ≥ 90°F

Longest ever

18 days
record run, ended Jul 19 1936

So far in 2026

31 days
days with a high ≥ 90°F this year

Climate Normals

Normal high & low by month, from Bismarck's own 1991–2020 record. Today's normal high: 79°F · forecast is +14° 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 high 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 high

2026 So Far

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

Every Day Since 1874

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

Days Above the Mark

How many days a year hit a given high at Bismarck — counted through Sep 4 each year, so you can see whether 2026 is running hot. Pick a threshold:
31 days ≥90°F so far in 2026 — tied for the 14th most in 153 years. Normal for this point: 18. Record: 49 in 1936.

Share Card

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