40.667°N, 89.684°W · station PIAthr · 144 years of record
96°F
HOTTEST SEP 1 SINCE 2011
forecast high · Sep 1
7-Day Forecast
NWS NDFD forecast high temperature for Peoria.
This Day in History
Every year's high on each of the next 7 forecast dates at Peoria — toggle a day below. The forecast line shows where it lands; the ringed bar is the hottest on record.
Ranks
#5 / 142
warmest Sep 1 in 142 yrs of record
Warmest Sep 1 ever
101°F
set in 1913
Coolest Sep 1 ever
61°F
set in 1935
Forecast high 96°F — 5th warmest Sep 1 of 142 years · record 101°F (1913) · warmest since 2011.
Ranks
#7 / 142
warmest Sep 2 in 142 yrs of record
Warmest Sep 2 ever
100°F
set in 1913
Coolest Sep 2 ever
58°F
set in 1935
Forecast high 96°F — 7th warmest Sep 2 of 142 years · record 100°F (1913) · warmest since 2011.
Ranks
#6 / 143
warmest Sep 3 in 143 yrs of record
Warmest Sep 3 ever
99°F
set in 1913
Coolest Sep 3 ever
60°F
set in 1905
Forecast high 95°F — 6th warmest Sep 3 of 143 years · record 99°F (1913) · warmest since 2015.
Ranks
#12 / 143
warmest Sep 4 in 143 yrs of record
Warmest Sep 4 ever
98°F
set in 2015
Coolest Sep 4 ever
62°F
set in 1918
Forecast high 93°F — 12th warmest Sep 4 of 143 years · record 98°F (2015) · warmest since 2015.
Ranks
#14 / 143
warmest Sep 5 in 143 yrs of record
Warmest Sep 5 ever
104°F
set in 1899
Coolest Sep 5 ever
65°F
set in 1962
Forecast high 92°F — 14th warmest Sep 5 of 143 years · record 104°F (1899) · warmest since 2015.
Ranks
#41 / 143
warmest Sep 6 in 143 yrs of record
Warmest Sep 6 ever
101°F
set in 1899
Coolest Sep 6 ever
60°F
set in 1885
Forecast high 87°F — 41st warmest Sep 6 of 143 years · record 101°F (1899) · warmest since 2024.
Ranks
#58 / 143
warmest Sep 7 in 143 yrs of record
Warmest Sep 7 ever
101°F
set in 1899
Coolest Sep 7 ever
65°F
set in 1956
Forecast high 84°F — 58th warmest Sep 7 of 143 years · record 101°F (1899) · warmest since 2021.
The hottest and coldest ever recorded at Peoria in each calendar month, and for the whole 1883–2026 record — with the year each was set.
Month
Record High
Record Low
Jan
71°FJan 23, 1909
-27°FJan 5, 1884
Feb
78°FFeb 27, 2024
-26°FFeb 13, 1905
Mar
87°FMar 21, 1907
-10°FMar 8, 1943
Apr
92°FApr 29, 1894
14°FApr 5, 1920
May
104°FMay 31, 1934
25°FMay 10, 1966
Jun
105°FJun 1, 1934
39°FJun 4, 1945
Jul
113°FJul 15, 1936
46°FJul 26, 1911
Aug
106°FAug 18, 1936
41°FAug 26, 1910
Sep
104°FSep 5, 1899
26°FSep 30, 1899
Oct
93°FOct 3, 2006
7°FOct 30, 1925
Nov
81°FNov 1, 1888
-2°FNov 26, 1977
Dec
71°FDec 3, 1970
-24°FDec 28, 1924
All-time
113°FJul 15, 1936
-27°FJan 5, 1884
2026 Records So Far
Records set or tied at Peoria so far this year — through Aug 30.
Record Highs in 2026
6 broke
plus 2 tied — daily record highs set this year
Monthly high record this year: Mar (87°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
82°F
record high minimum — the night it never cooled · Aug 22, 1936
Coldest high ever
-16°F
record low maximum — the day it never warmed · Jan 5, 1884
Month
Warmest low
Coldest high
Jan
59°FJan 2, 1897
-16°FJan 5, 1884
Feb
54°FFeb 24, 1930
-7°FFeb 13, 1905
Mar
66°FMar 21, 2012
11°FMar 7, 1943
Apr
72°FApr 28, 1896
29°FApr 6, 1982
May
75°FMay 29, 1895
38°FMay 1, 1909
Jun
80°FJun 25, 1890
49°FJun 3, 1945
Jul
80°FJul 24, 1892
62°FJul 5, 1909
Aug
82°FAug 22, 1936
61°FAug 25, 1987
Sep
76°FSep 3, 1939
45°FSep 25, 1942
Oct
72°FOct 5, 1884
21°FOct 29, 1925
Nov
64°FNov 4, 2024
8°FNov 24, 1950
Dec
61°FDec 13, 2015
-11°FDec 24, 1983
All-time
82°FAug 22, 1936
-16°FJan 5, 1884
Hot Streaks
Current run
0 days
consecutive days with a high ≥ 90°F
Longest ever
21 days
record run, ended Jul 31 1916
So far in 2026
13 days
days with a high ≥ 90°F this year
Climate Normals
Normal high & low by month, from Peoria's own 1991–2020 record. Today's normal high: 83°F · forecast is +13° vs normal.