COLDESTSINCE.COMBrowse statesThe AlmanacYear in ReviewThe Wire
COLD94
Coldest Since
National Cold Records
California · THREADEX · 1893–2026

Riverside, CA

33.953°N, 117.435°W · station RALthr · 134 years of record
62°F
forecast low · Sep 2

7-Day Forecast

NWS NDFD forecast low temperature for Riverside.
62°WED9/262°THU9/362°FRI9/463°SAT9/568°SUN9/669°MON9/768°TUE9/8

This Day in History

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

Ranks

#80 / 124
coldest Sep 2 in 124 yrs of record

Coldest Sep 2 ever

47°F
set in 1928

Mildest Sep 2 ever

80°F
set in 2007
Forecast low 62°F — 80th coldest Sep 2 of 124 years · record 47°F (1928) · coldest since 2020.
1893: 63°F1894: 64°F1895: 50°F1901: 49°F1902: 56°F1903: 59°F1904: 50°F1905: 54°F1906: 56°F1907: 60°F1908: 49°F1909: 57°F1910: 60°F1911: 58°F1912: 56°F1913: 60°F1914: 48°F1915: 62°F1916: 48°F1917: 52°F1918: 56°F1919: 52°F1920: 55°F1921: 60°F1922: 58°F1923: 59°F1924: 57°F1925: 56°F1926: 48°F1927: 50°F1928: 47°F1929: 65°F1930: 54°F1931: 64°F1932: 51°F1933: 56°F1934: 59°F1935: 60°F1936: 56°F1937: 51°F1938: 60°F1939: 51°F1940: 60°F1941: 50°F1942: 47°F1943: 53°F1944: 55°F1945: 65°F1946: 50°F1947: 61°F1948: 58°F1949: 51°F1950: 54°F1951: 48°F1952: 60°F1953: 51°F1954: 66°F1955: 72°F1956: 57°F1957: 55°F1958: 59°F1959: 59°F1960: 62°F1961: 54°F1962: 56°F1963: 58°F1964: 57°F1965: 55°F1966: 57°F1967: 73°F1968: 60°F1969: 61°F1970: 54°F1971: 58°F1972: 60°F1973: 52°F1974: 63°F1975: 55°F1976: 61°F1977: 60°F1978: 61°F1979: 56°F1980: 62°F1981: 61°F1982: 70°F1983: 68°F1984: 62°F1985: 63°F1986: 59°F1987: 71°F1988: 67°F1989: 54°F1990: 64°F1991: 63°F1993: 66°F1994: 59°F1995: 72°F1996: 64°F1997: 69°F1998: 73°F1999: 57°F2000: 59°F2002: 71°F2004: 63°F2006: 66°F2007: 80°F2008: 79°F2009: 72°F2010: 62°F2011: 61°F2012: 64°F2013: 72°F2014: 64°F2015: 65°F2016: 66°F2017: 76°F2018: 64°F2019: 71°F2020: 61°F2021: 63°F2022: 75°F2023: 69°F2024: 66°F2025: 69°F62° forecast4550556065707580191019201930194019501960197019801990200020102020
📖 Riverside's full Climate Almanac →

The Numbers

Forecast low · Sep 262°F
Coldest this date since2020
This-date record47°F
This-date rank#80 of 124
Coldest at any time since2026
All-time record19°F (1950)
Odds to tie/break0.0% (daily)
Period of record1893–2026

Record Book

The hottest and coldest ever recorded at Riverside in each calendar month, and for the whole 1893–2026 record — with the year each was set.
MonthRecord HighRecord Low
Jan94°FJan 8, 192319°FJan 7, 1950
Feb94°FFeb 25, 192124°FFeb 16, 1903
Mar102°FMar 10, 191625°FMar 2, 1903
Apr105°FApr 6, 198929°FApr 4, 1970
May110°FMay 29, 198433°FMay 1, 1915
Jun118°FJun 16, 191735°FJun 11, 1894
Jul118°FJul 17, 192541°FJul 7, 1948
Aug113°FAug 24, 192640°FAug 27, 1902
Sep117°FSep 5, 202037°FSep 15, 1902
Oct109°FOct 1, 198030°FOct 30, 1971
Nov100°FNov 3, 201023°FNov 11, 1950
Dec94°FDec 3, 195821°FDec 26, 1911
All-time118°FJun 16, 191719°FJan 7, 1950

2026 Records So Far

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

Record Highs in 2026

9 broke
plus 1 tied — daily record highs set this year
Monthly high record this year: Mar (102°F)

Record Lows in 2026

0 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

80°F
record high minimum — the night it never cooled · Sep 21, 1939

Coldest high ever

37°F
record low maximum — the day it never warmed · Dec 13, 1932
MonthWarmest lowColdest high
Jan65°FJan 7, 200341°FJan 6, 1913
Feb72°FFeb 15, 201645°FFeb 1, 1923
Mar66°FMar 13, 201546°FMar 4, 1945
Apr63°FApr 2, 196052°FApr 4, 1965
May74°FMay 18, 200852°FMay 28, 1953
Jun74°FJun 26, 200661°FJun 3, 1925
Jul80°FJul 22, 200672°FJul 2, 1902
Aug79°FAug 17, 201269°FAug 29, 1951
Sep80°FSep 21, 193962°FSep 24, 1934
Oct74°FOct 1, 200853°FOct 22, 1941
Nov71°FNov 3, 195044°FNov 26, 1906
Dec67°FDec 16, 199837°FDec 13, 1932
All-time80°FSep 21, 193937°FDec 13, 1932

Cold Streaks

Current run

0 days
consecutive days with a low ≤ 32°F

Longest ever

13 days
record run, ended Jan 1 1950

So far in 2026

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

Climate Normals

Normal low & low by month, from Riverside's own 1991–2020 record. Today's normal low: 66°F · forecast is -4° vs normal.
Jan: 69°FJan: 44°FFeb: 69°FFeb: 45°FMar: 73°FMar: 48°FApr: 77°FApr: 50°FMay: 81°FMay: 55°FJun: 88°FJun: 60°FJul: 94°FJul: 64°FAug: 96°FAug: 65°FSep: 93°FSep: 62°FOct: 84°FOct: 56°FNov: 76°FNov: 48°FDec: 68°FDec: 43°FJFMAMJJASOND

Sun & Location

Sun & Daylight Today

Sunrise5:23 AM
Sunset6:16 PM
Solar noon11:49 AM
Daylight12h 52m · losing 14 min/wk
Local standard time (no DST), level horizon.

Location

33.95°N, 117.44°W

Nearby Stations

Long Beach, CA41 mi WLos Angeles Downtown, CA46 mi WPalm Springs, CA54 mi ELos Angeles Airport, CA54 mi WBurbank Glendale Pasadena, CA55 mi WPalmdale, CA59 mi NW

The Last 6 Weeks

Riverside'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.
Riverside, CA — last six weeks of daily low

2026 So Far

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

Every Day Since 1893

Each cell is one day's low at Riverside, coloured by temperature — 134 years of record, so heat waves read as warm streaks and cold snaps as blue.
Riverside, CA daily low heat map 1893–2026

Days Below the Mark

How many days a year hit a given low at Riverside — counted through Sep 2 each year, so you can see whether 2026 is running cold. Pick a threshold:
No days ≤32°F yet in 2026. Normal for this point: 8. Record: 34 in 1903.

Share Card

A ready-to-share summary of Riverside's outlook — post it, or link this page.
Riverside, CA cold share card
Download card
See Riverside on hottestsince.com →