Home / United States / California / Riverside California · THREADEX · 1893–2026
Riverside, CA 33.953°N, 117.435°W · station RALthr · 134 years of record
105°F
HOTTEST JUL 15 SINCE 2006
forecast high · Jul 15
NWS NDFD forecast high temperature for Riverside.
94° MON 7/13 97° TUE 7/14 105° WED 7/15 102° THU 7/16 94° FRI 7/17 94° SAT 7/18 95° SUN 7/19 This Day in History · Jul 15
Today ranks #4 / 126
warmest Jul 15 in 126 yrs of record
Hottest Jul 15 ever 108°F
set in 1978
Coolest Jul 15 ever 82°F
set in 1907
Hottest Jul 15 — Year by Year
Every year's high on Jul 15 at Riverside. The forecast line shows where today lands; the ringed bar is the hottest on record.
82 95 108 1893: 97°F 1894: 100°F 1895: 102°F 1902: 97°F 1903: 92°F 1904: 88°F 1905: 86°F 1906: 87°F 1907: 82°F 1908: 97°F 1909: 93°F 1910: 96°F 1911: 105°F 1912: 99°F 1913: 93°F 1914: 88°F 1915: 91°F 1916: 85°F 1917: 97°F 1918: 86°F 1919: 94°F 1920: 96°F 1921: 98°F 1922: 102°F 1923: 94°F 1924: 100°F 1925: 103°F 1926: 102°F 1927: 88°F 1928: 98°F 1929: 105°F 1930: 106°F 1931: 92°F 1932: 87°F 1933: 90°F 1934: 89°F 1935: 105°F 1936: 98°F 1937: 91°F 1938: 95°F 1939: 97°F 1940: 105°F 1941: 101°F 1942: 94°F 1943: 82°F 1944: 87°F 1945: 93°F 1946: 96°F 1947: 90°F 1948: 96°F 1949: 97°F 1950: 89°F 1951: 94°F 1952: 88°F 1953: 92°F 1954: 105°F 1955: 98°F 1956: 89°F 1957: 101°F 1958: 86°F 1959: 93°F 1960: 98°F 1961: 95°F 1962: 82°F 1963: 94°F 1964: 100°F 1965: 90°F 1966: 95°F 1967: 97°F 1968: 87°F 1969: 92°F 1970: 94°F 1971: 91°F 1972: 95°F 1973: 86°F 1974: 96°F 1975: 92°F 1976: 88°F 1977: 98°F 1978: 108°F 1979: 101°F 1980: 96°F 1981: 93°F 1982: 92°F 1984: 98°F 1985: 95°F 1986: 90°F 1987: 92°F 1988: 90°F 1989: 93°F 1990: 94°F 1991: 91°F 1992: 93°F 1993: 86°F 1994: 93°F 1995: 98°F 1996: 91°F 1997: 95°F 1998: 103°F 1999: 92°F 2000: 96°F 2001: 89°F 2002: 97°F 2003: 101°F 2004: 102°F 2005: 93°F 2006: 106°F 2007: 94°F 2008: 96°F 2009: 96°F 2010: 104°F 2011: 83°F 2012: 94°F 2013: 94°F 2014: 88°F 2015: 91°F 2016: 97°F 2017: 101°F 2018: 98°F 2019: 100°F 2020: 90°F 2021: 95°F 2022: 97°F 2023: 101°F 2024: 97°F 2025: 87°F 105° forecast 1893 2025 1978 Forecast high · Jul 15 105°F Hottest this date since 2006 This-date record 108°F This-date rank #4 of 126
Hottest at any time since 2025 All-time record 118°F (1917) Odds to tie/break 54.0% (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 9 days
consecutive days with a high ≥ 90°F
Longest ever 66 days
record run, ended Aug 17 1981
So far in 2026 38 days
days with a high ≥ 90°F this year
Normal high & low by month, from Riverside's own 1991–2020 record. Today's normal high: 94°F · forecast is +11° 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 high 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 high, the normal, and the full span ever seen. A shareable look at where the year stands.
Each cell is one day's high 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 high at Riverside — counted through Jul 15 each year, so you can see whether 2026 is running hot. Pick a threshold:
70° 75° 80° 85° 90° 95° 100° 105° 110°
38 days ≥90°F so far in 2026 — tied for the 18th most in 134 years. Normal for this point: 28 . Record: 50 in 1984.
A ready-to-share summary of Riverside's outlook — post it, or link this page.
See Riverside on coldestsince.com →