California · THREADEX · 1893–2026

Riverside, CA

33.953°N, 117.435°W · station RALthr · 134 years of record
66°F
forecast low · Jul 18

7-Day Forecast

NWS NDFD forecast low temperature for Riverside.
68°TUE7/1470°WED7/1574°THU7/1668°FRI7/1766°SAT7/1867°SUN7/19

This Day in History · Jul 18

Today ranks

#105 / 126
coldest Jul 18 in 126 yrs of record

Coldest Jul 18 ever

50°F
set in 1894

Mildest Jul 18 ever

74°F
set in 2003

Coldest Jul 18 — Year by Year

Every year's low on Jul 18 at Riverside. The forecast line shows where today lands; the ringed bar is the coldest on record.
5062741893: 58°F1894: 50°F1895: 57°F1902: 57°F1903: 53°F1904: 65°F1905: 56°F1906: 56°F1907: 51°F1908: 59°F1909: 56°F1910: 68°F1911: 61°F1912: 62°F1913: 57°F1914: 59°F1915: 50°F1916: 52°F1917: 59°F1918: 60°F1919: 58°F1920: 55°F1921: 55°F1922: 59°F1923: 50°F1924: 51°F1925: 69°F1926: 64°F1927: 57°F1928: 59°F1929: 63°F1930: 59°F1931: 61°F1932: 52°F1933: 60°F1934: 63°F1935: 60°F1936: 66°F1937: 53°F1938: 62°F1939: 59°F1940: 51°F1941: 65°F1942: 56°F1943: 55°F1944: 52°F1945: 55°F1946: 60°F1947: 54°F1948: 57°F1949: 59°F1950: 60°F1951: 65°F1952: 59°F1953: 59°F1954: 70°F1955: 61°F1956: 55°F1957: 58°F1958: 54°F1959: 61°F1960: 64°F1961: 65°F1962: 55°F1963: 57°F1964: 58°F1965: 59°F1966: 51°F1967: 58°F1968: 59°F1969: 61°F1970: 65°F1971: 65°F1972: 61°F1973: 57°F1974: 61°F1975: 60°F1976: 60°F1977: 64°F1978: 62°F1979: 65°F1980: 61°F1981: 62°F1982: 60°F1983: 58°F1984: 64°F1985: 67°F1986: 55°F1987: 60°F1988: 68°F1989: 60°F1990: 68°F1991: 59°F1992: 67°F1993: 60°F1994: 68°F1995: 65°F1996: 63°F1997: 64°F1998: 73°F1999: 62°F2000: 58°F2001: 58°F2002: 63°F2003: 74°F2004: 68°F2006: 73°F2007: 62°F2008: 68°F2009: 69°F2010: 70°F2011: 62°F2012: 59°F2013: 63°F2014: 61°F2015: 68°F2016: 64°F2017: 67°F2018: 68°F2019: 62°F2020: 63°F2021: 71°F2022: 71°F2023: 69°F2024: 65°F2025: 64°F66° forecast189318942025

The Numbers

Forecast low · Jul 1866°F
Coldest this date since2025
This-date record50°F
This-date rank#105 of 126
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°F192319°F1950
Feb94°F192124°F1903
Mar102°F191625°F1903
Apr105°F198929°F1970
May110°F198433°F1915
Jun118°F191735°F1894
Jul118°F192541°F1948
Aug113°F192640°F1902
Sep117°F202037°F1902
Oct109°F198030°F1971
Nov100°F201023°F1950
Dec94°F195821°F1911
All-time118°F191719°F1950

2026 Records So Far

Records set or tied at Riverside so far this year — through Jul 11.

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

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: 65°F · forecast is +1° 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

Sunrise4:48 AM
Sunset7:02 PM
Solar noon11:55 AM
Daylight14h 14m · losing 6 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 Jul 18 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
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