Home / United States / California / Riverside California · THREADEX · 1893–2026
Riverside, CA 33.953°N, 117.435°W · station RALthr · 134 years of record
66°F
COLDEST JUL 18 SINCE 2025
forecast low · Jul 18
NWS NDFD forecast low temperature for Riverside.
68° TUE 7/14 70° WED 7/15 74° THU 7/16 68° FRI 7/17 66° SAT 7/18 67° SUN 7/19 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.
50 62 74 1893: 58°F 1894: 50°F 1895: 57°F 1902: 57°F 1903: 53°F 1904: 65°F 1905: 56°F 1906: 56°F 1907: 51°F 1908: 59°F 1909: 56°F 1910: 68°F 1911: 61°F 1912: 62°F 1913: 57°F 1914: 59°F 1915: 50°F 1916: 52°F 1917: 59°F 1918: 60°F 1919: 58°F 1920: 55°F 1921: 55°F 1922: 59°F 1923: 50°F 1924: 51°F 1925: 69°F 1926: 64°F 1927: 57°F 1928: 59°F 1929: 63°F 1930: 59°F 1931: 61°F 1932: 52°F 1933: 60°F 1934: 63°F 1935: 60°F 1936: 66°F 1937: 53°F 1938: 62°F 1939: 59°F 1940: 51°F 1941: 65°F 1942: 56°F 1943: 55°F 1944: 52°F 1945: 55°F 1946: 60°F 1947: 54°F 1948: 57°F 1949: 59°F 1950: 60°F 1951: 65°F 1952: 59°F 1953: 59°F 1954: 70°F 1955: 61°F 1956: 55°F 1957: 58°F 1958: 54°F 1959: 61°F 1960: 64°F 1961: 65°F 1962: 55°F 1963: 57°F 1964: 58°F 1965: 59°F 1966: 51°F 1967: 58°F 1968: 59°F 1969: 61°F 1970: 65°F 1971: 65°F 1972: 61°F 1973: 57°F 1974: 61°F 1975: 60°F 1976: 60°F 1977: 64°F 1978: 62°F 1979: 65°F 1980: 61°F 1981: 62°F 1982: 60°F 1983: 58°F 1984: 64°F 1985: 67°F 1986: 55°F 1987: 60°F 1988: 68°F 1989: 60°F 1990: 68°F 1991: 59°F 1992: 67°F 1993: 60°F 1994: 68°F 1995: 65°F 1996: 63°F 1997: 64°F 1998: 73°F 1999: 62°F 2000: 58°F 2001: 58°F 2002: 63°F 2003: 74°F 2004: 68°F 2006: 73°F 2007: 62°F 2008: 68°F 2009: 69°F 2010: 70°F 2011: 62°F 2012: 59°F 2013: 63°F 2014: 61°F 2015: 68°F 2016: 64°F 2017: 67°F 2018: 68°F 2019: 62°F 2020: 63°F 2021: 71°F 2022: 71°F 2023: 69°F 2024: 65°F 2025: 64°F 66° forecast 1893 1894 2025 Forecast low · Jul 18 66°F Coldest this date since 2025 This-date record 50°F This-date rank #105 of 126
Coldest at any time since 2026 All-time record 19°F (1950) Odds to tie/break 0.0% (daily) Period of record 1893–2026
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.
Month Record High Record Low Jan 94°F 1923 19°F 1950 Feb 94°F 1921 24°F 1903 Mar 102°F 1916 25°F 1903 Apr 105°F 1989 29°F 1970 May 110°F 1984 33°F 1915 Jun 118°F 1917 35°F 1894 Jul 118°F 1925 41°F 1948 Aug 113°F 1926 40°F 1902 Sep 117°F 2020 37°F 1902 Oct 109°F 1980 30°F 1971 Nov 100°F 2010 23°F 1950 Dec 94°F 1958 21°F 1911 All-time 118°F 1917 19°F 1950
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
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
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°F Jan: 44°F Feb: 69°F Feb: 45°F Mar: 73°F Mar: 48°F Apr: 77°F Apr: 50°F May: 81°F May: 55°F Jun: 88°F Jun: 60°F Jul: 94°F Jul: 64°F Aug: 96°F Aug: 65°F Sep: 93°F Sep: 62°F Oct: 84°F Oct: 56°F Nov: 76°F Nov: 48°F Dec: 68°F Dec: 43°F J F M A M J J A S O N D Sun & Daylight Today Sunrise 4:48 AM Sunset 7:02 PM Solar noon 11:55 AM Daylight 14h 14m · losing 6 min/wk
Local standard time (no DST), level horizon.
Location 33.95°N, 117.44°W 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.
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.
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.
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:
40° 32° 20° 10° 0° -10° -20°
No days ≤32°F yet in 2026. Normal for this point: 8 . Record: 34 in 1903.
A ready-to-share summary of Riverside's outlook — post it, or link this page.
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