United States · 1991–2020

Best time to visit
Peoria.

September leads for comfortable weather in Peoria: typically 26.7°C by day, 8.2°C at night, with 29 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high26.7°C

Typical low8.2°C

Rain in September29 mm

Comfort

September

September · June · May

78climate match

Beach

August

August · June · July

67climate match

Outdoors

October

October · May · September

80climate match

The weakest month is January, scoring 5 against September’s 78 — days reach only 6°C, 18° below the 24°C the score treats as ideal, and nights drop to -10°C.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

56° / -10°

Feb

57.7° / -8.7°

Mar

2912.9° / -4°

Apr

4516.7° / -0.1°

May

6922.1° / 5.2°

Jun

7228.6° / 10.6°

Jul

6332.5° / 14.2°

Aug

6930.8° / 13.2°

Sep

7826.7° / 8.2°

Oct

5718.9° / 0.9°

Nov

2211.7° / -5.3°

Dec

56.2° / -10°

Monthly climate evidence for Peoria — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	6°C	-10°C	10 mm	2.8	9 h 39	5	Strong coverage
February	7.7°C	-8.7°C	12 mm	2.9	10 h 38	5	Strong coverage
March	12.9°C	-4°C	29 mm	3.6	11 h 49	29	Strong coverage
April	16.7°C	-0.1°C	46 mm	5.6	13 h 11	45	Strong coverage
May	22.1°C	5.2°C	59 mm	6.9	14 h 20	69	Strong coverage
June	28.6°C	10.6°C	50 mm	6.4	14 h 58	72	Strong coverage
July	32.5°C	14.2°C	64 mm	7.2	14 h 43	63	Strong coverage
August	30.8°C	13.2°C	50 mm	6.3	13 h 44	69	Strong coverage
September	26.7°C	8.2°C	29 mm	4.2	12 h 24	78	Strong coverage
October	18.9°C	0.9°C	25 mm	3.9	11 h 05	57	Strong coverage
November	11.7°C	-5.3°C	18 mm	3.4	9 h 56	22	Strong coverage
December	6.2°C	-10°C	11 mm	2.8	9 h 22	5	Strong coverage

What has changed

Peoria runs +0.0°C
on the 1961–1990 baseline.

Each bar compares the 2011–2025 daytime average for that month against the same month in 1961–1990, measured at the same station. Months where the older record is too thin to compare are left blank.

Jan

—

Feb

-1.2

Mar

+1.6

Apr

-1.0

May

-1.6

Jun

+1.0

Jul

0.0

Aug

0.0

Sep

+1.5

Oct

-1.3

Nov

+1.2

Dec

—

September daytime highs, 2011–2019. Last recorded: 29.9°C.

Records at BYERS 5 ENE, 1930–2019
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.3°C28 Jan 2015	-35.6°C18 Jan 1984	29 mm29 Jan 1942	35 mm1942 · driest 0 mm in 1961	88
February	25.6°C11 Feb 2017	-37.8°C8 Feb 1936	29 mm3 Feb 2012	47 mm2012 · driest 0 mm in 1949	86
March	29.4°C28 Mar 1963	-28.3°C9 Mar 1932	62 mm14 Mar 2019	117 mm2019 · driest 0 mm in 2012	88
April	33.3°C30 Apr 1992	-22.8°C2 Apr 1975	97 mm27 Apr 1938	133 mm1938 · driest 7 mm in 2002	89
May	36.7°C19 May 1996	-6.7°C3 May 2008	99 mm6 May 1973	154 mm1975 · driest 4 mm in 1974	88
June	41.1°C23 Jun 1954	-1.7°C2 Jun 1951	77 mm16 Jun 1965	204 mm1965 · driest 3 mm in 1956	88
July	41.1°C18 Jul 1997	3.3°C30 Jul 1971	83 mm23 Jul 1991	151 mm1991 · driest 4 mm in 2002	88
August	40.0°C1 Aug 1938	2.8°C31 Aug 1993	102 mm3 Aug 1951	151 mm1951 · driest 0 mm in 1960	88
September	38.3°C6 Sep 1998	-12.2°C30 Sep 1985	102 mm2 Sep 1966	144 mm1938 · driest 0 mm in 1978	88
October	32.8°C2 Oct 1997	-20.6°C29 Oct 1991	46 mm25 Oct 1997	108 mm1969 · driest 0 mm in 1934	90
November	27.2°C8 Nov 1994	-30.0°C13 Nov 2014	42 mm1 Nov 1972	70 mm1972 · driest 0 mm in 1965	90
December	24.4°C27 Dec 1980	-36.1°C22 Dec 1989	23 mm21 Dec 2006	42 mm2006 · driest 0 mm in 1980	88

Typical days per month at BYERS 5 ENE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	31	<1	4
February	0	0	27	<1	4
March	1	0	26	1	3
April	4	<1	16	2	2
May	12	3	4	2	<1
June	23	14	<1	1	0
July	29	24	0	2	0
August	28	21	0	2	0
September	20	11	<1	<1	<1
October	8	1	13	<1	1
November	<1	0	26	<1	3
December	0	0	30	<1	4

How often, not how much — every day in BYERS 5 ENE’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	1%	8%	<1%	2%	1.1–10.1°C
February	4%	10%	<1%	4%	4.2–12.1°C
March	14%	13%	2%	6%	8.5–15.5°C
April	37%	18%	5%	13%	13.6–19.8°C
May	59%	23%	7%	25%	19.7–24.7°C
June	77%	20%	5%	17%	25.3–31.4°C
July	77%	23%	5%	22%	30.7–34.3°C
August	81%	19%	4%	16%	29.3–32.7°C
September	79%	14%	3%	8%	24.4–28.8°C
October	54%	10%	2%	4%	16.8–21.9°C
November	15%	10%	1%	4%	8.3–15.0°C
December	2%	8%	<1%	2%	3.4–9.8°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

1931Each stripe is one year’s mean temperature against the 78-year average. Warmest: 1954. Coolest: 1973.2012

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5434337
NOAA station: USC00051179 · BYERS 5 ENE
Station distance: 6.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 27 usable years
Daylight: Calculated from latitude 39.68°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from BYERS 5 ENE is what differs

Strasburg→Byers→Deer Trail→Comanche Creek→Bijou→Cabin Creek→

Or put two places side by side: Peoria vs Strasburg

Best time to visitPeoria.