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California · THREADEX · 1935–2026

Alturas, CA

41.484°N, 120.561°W · station AATthr · 92 years of record
76°F
forecast high · Sep 1

7-Day Forecast

NWS NDFD forecast high temperature for Alturas.
76°TUE9/161°WED9/257°THU9/365°FRI9/470°SAT9/572°SUN9/671°MON9/7

This Day in History

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

Ranks

#76 / 89
warmest Sep 1 in 89 yrs of record

Warmest Sep 1 ever

98°F
set in 1955

Coolest Sep 1 ever

65°F
set in 2008
Forecast high 76°F — 76th warmest Sep 1 of 89 years · record 98°F (1955) · warmest since 2025.
1936: 88°F1937: 75°F1938: 84°F1939: 70°F1940: 87°F1941: 69°F1942: 86°F1943: 85°F1944: 92°F1945: 88°F1946: 78°F1947: 91°F1948: 82°F1949: 94°F1950: 96°F1951: 78°F1952: 85°F1953: 79°F1954: 88°F1955: 98°F1956: 86°F1957: 88°F1958: 95°F1959: 82°F1960: 92°F1961: 84°F1962: 90°F1963: 72°F1964: 77°F1965: 91°F1966: 82°F1967: 92°F1968: 95°F1969: 96°F1970: 81°F1971: 66°F1972: 89°F1973: 72°F1974: 88°F1975: 74°F1976: 92°F1977: 81°F1978: 80°F1979: 75°F1980: 76°F1981: 86°F1982: 82°F1983: 76°F1984: 77°F1985: 84°F1986: 83°F1987: 96°F1988: 93°F1989: 79°F1990: 84°F1991: 85°F1992: 84°F1993: 86°F1994: 85°F1995: 88°F1997: 87°F1998: 96°F1999: 69°F2000: 70°F2001: 87°F2002: 91°F2003: 90°F2004: 89°F2005: 89°F2006: 91°F2007: 90°F2008: 65°F2009: 86°F2010: 80°F2011: 78°F2012: 86°F2013: 83°F2014: 86°F2015: 86°F2016: 85°F2017: 95°F2018: 85°F2019: 87°F2020: 85°F2021: 84°F2022: 98°F2023: 65°F2024: 96°F2025: 91°F76° forecast65707580859095100194019501960197019801990200020102020
📖 Alturas's full Climate Almanac →

The Numbers

Forecast high · Sep 176°F
Hottest this date since2025
This-date record98°F
This-date rank#76 of 89
Hottest at any time since2026
All-time record107°F (1960)
Odds to tie/break0.0% (daily)
Period of record1935–2026

Record Book

The hottest and coldest ever recorded at Alturas in each calendar month, and for the whole 1935–2026 record — with the year each was set.
MonthRecord HighRecord Low
Jan69°FJan 21, 1961-32°FJan 20, 1937
Feb72°FFeb 28, 1986-33°FFeb 5, 1989
Mar82°FMar 30, 1966-7°FMar 1, 1971
Apr85°FApr 28, 19877°FApr 5, 1997
May95°FMay 29, 198314°FMay 6, 2010
Jun105°FJun 28, 202121°FJun 18, 1973
Jul107°FJul 19, 196028°FJul 1, 1976
Aug106°FAug 4, 196126°FAug 23, 1960
Sep106°FSep 4, 195515°FSep 30, 1950
Oct93°FOct 15, 19610°FOct 31, 2002
Nov82°FNov 1, 1962-17°FNov 12, 1985
Dec71°FDec 4, 1939-34°FDec 9, 1972
All-time107°FJul 19, 1960-34°FDec 9, 1972

2026 Records So Far

Records set or tied at Alturas so far this year — through Aug 26.

Record Highs in 2026

6 broke
plus 2 tied — daily record highs set this year
Monthly high record this year: Mar (82°F)

Record Lows in 2026

1 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

68°F
record high minimum — the night it never cooled · Jul 17, 2014

Coldest high ever

-1°F
record low maximum — the day it never warmed · Dec 22, 1990
MonthWarmest lowColdest high
Jan48°FJan 1, 19970°FJan 7, 1937
Feb44°FFeb 4, 19639°FFeb 6, 1989
Mar45°FMar 13, 200325°FMar 3, 1976
Apr55°FApr 29, 193932°FApr 1, 1982
May57°FMay 31, 198634°FMay 3, 1964
Jun66°FJun 25, 202640°FJun 1, 1971
Jul68°FJul 17, 201455°FJul 3, 1978
Aug65°FAug 15, 199253°FAug 20, 1968
Sep62°FSep 5, 199842°FSep 27, 1986
Oct56°FOct 24, 197730°FOct 29, 1971
Nov48°FNov 3, 194122°FNov 24, 2010
Dec45°FDec 22, 1955-1°FDec 22, 1990
All-time68°FJul 17, 2014-1°FDec 22, 1990

Hot Streaks

Current run

1 days
consecutive days with a high ≥ 90°F

Longest ever

32 days
record run, ended Aug 15 1971

So far in 2026

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

Climate Normals

Normal high & low by month, from Alturas's own 1991–2020 record. Today's normal high: 85°F · forecast is -9° vs normal.
Jan: 44°FJan: 20°FFeb: 47°FFeb: 22°FMar: 53°FMar: 25°FApr: 59°FApr: 29°FMay: 68°FMay: 36°FJun: 78°FJun: 41°FJul: 89°FJul: 46°FAug: 88°FAug: 43°FSep: 80°FSep: 36°FOct: 66°FOct: 28°FNov: 51°FNov: 24°FDec: 42°FDec: 19°FJFMAMJJASOND

Sun & Location

Sun & Daylight Today

Sunrise5:28 AM
Sunset6:36 PM
Solar noon12:02 PM
Daylight13h 07m · losing 19 min/wk
Local standard time (no DST), level horizon.

Location

41.48°N, 120.56°W

Nearby Stations

Klamath Falls, OR75 mi NWMount Shasta, CA91 mi WRedding, CA112 mi SWMedford, OR134 mi WReno, NV142 mi SWinnemucca, NV148 mi E

The Last 6 Weeks

Alturas'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.
Alturas, CA — last six weeks of daily high

2026 So Far

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

Every Day Since 1935

Each cell is one day's high at Alturas, coloured by temperature — 92 years of record, so heat waves read as warm streaks and cold snaps as blue.
Alturas, CA daily high heat map 1935–2026

Days Above the Mark

How many days a year hit a given high at Alturas — counted through Sep 1 each year, so you can see whether 2026 is running hot. Pick a threshold:
40 days ≥90°F so far in 2026 — tied for the 19th most in 92 years. Normal for this point: 31. Record: 61 in 2021.

Share Card

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