40.667°N, 89.684°W · station PIAthr · 144 years of record
65°F
COLDEST SEP 8 SINCE 2025
forecast low · Sep 8
7-Day Forecast
NWS NDFD forecast low temperature for Peoria.
This Day in History
Every year's low 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 coldest on record.
Ranks
#144 / 143
coldest Sep 2 in 143 yrs of record
Coldest Sep 2 ever
44°F
set in 1946
Mildest Sep 2 ever
74°F
set in 1913
Forecast low 75°F — 144th coldest Sep 2 of 143 years · record 44°F (1946) · coldest since 2025.
Ranks
#144 / 143
coldest Sep 3 in 143 yrs of record
Coldest Sep 3 ever
43°F
set in 1974
Mildest Sep 3 ever
76°F
set in 1939
Forecast low 77°F — 144th coldest Sep 3 of 143 years · record 43°F (1974) · coldest since 2025.
Ranks
#144 / 143
coldest Sep 4 in 143 yrs of record
Coldest Sep 4 ever
40°F
set in 1974
Mildest Sep 4 ever
73°F
set in 2018
Forecast low 76°F — 144th coldest Sep 4 of 143 years · record 40°F (1974) · coldest since 2025.
Ranks
#141 / 143
coldest Sep 5 in 143 yrs of record
Coldest Sep 5 ever
44°F
set in 1928
Mildest Sep 5 ever
73°F
set in 1884
Forecast low 73°F — 141st coldest Sep 5 of 143 years · record 44°F (1928) · coldest since 2025.
Ranks
#133 / 143
coldest Sep 6 in 143 yrs of record
Coldest Sep 6 ever
43°F
set in 1962
Mildest Sep 6 ever
74°F
set in 1985
Forecast low 71°F — 133rd coldest Sep 6 of 143 years · record 43°F (1962) · coldest since 2025.
Ranks
#118 / 143
coldest Sep 7 in 143 yrs of record
Coldest Sep 7 ever
41°F
set in 1988
Mildest Sep 7 ever
75°F
set in 1899
Forecast low 68°F — 118th coldest Sep 7 of 143 years · record 41°F (1988) · coldest since 2025.
Ranks
#102 / 143
coldest Sep 8 in 143 yrs of record
Coldest Sep 8 ever
39°F
set in 1986
Mildest Sep 8 ever
75°F
set in 1894
Forecast low 65°F — 102nd coldest Sep 8 of 143 years · record 39°F (1986) · coldest since 2025.
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
Cold Streaks
Current run
0 days
consecutive days with a low ≤ 32°F
Longest ever
96 days
record run, ended Mar 10 1963
So far in 2026
65 days
days with a low ≤ 32°F this year
Climate Normals
Normal low & low by month, from Peoria's own 1991–2020 record. Today's normal low: 59°F · forecast is +6° vs normal.