United States · 1991–2020

Best time to visit
Worthington.

September leads for comfortable weather in Worthington: typically 23.8°C by day, 10.1°C at night, with 90 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high23.8°C

Typical low10.1°C

Rain in September90 mm

Comfort

September

September · August · June

79climate match

Beach

July

July · August · June

66climate match

Outdoors

September

September · May · October

74climate match

The weakest month is January, scoring 5 against September’s 79 — days reach only -2.6°C, 27° below the 24°C the score treats as ideal.

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

5-2.6° / -12.1°

Feb

5-0.1° / -10.1°

Mar

57.2° / -3.6°

Apr

3314.9° / 2.2°

May

6421.3° / 8.9°

Jun

6726.6° / 14.6°

Jul

6728.5° / 16.4°

Aug

7327.4° / 15.1°

Sep

7923.8° / 10.1°

Oct

4416.6° / 3.3°

Nov

97.8° / -2.7°

Dec

50.4° / -8.5°

Monthly climate evidence for Worthington — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-2.6°C	-12.1°C	32 mm	5.6	9 h 23	5	Strong coverage
February	-0.1°C	-10.1°C	39 mm	5.6	10 h 29	5	Strong coverage
March	7.2°C	-3.6°C	55 mm	6.7	11 h 48	5	Strong coverage
April	14.9°C	2.2°C	99 mm	8.7	13 h 18	33	Strong coverage
May	21.3°C	8.9°C	108 mm	10	14 h 34	64	Strong coverage
June	26.6°C	14.6°C	156 mm	10.1	15 h 16	67	Strong coverage
July	28.5°C	16.4°C	116 mm	7.7	15 h	67	Strong coverage
August	27.4°C	15.1°C	115 mm	7.8	13 h 54	73	Strong coverage
September	23.8°C	10.1°C	90 mm	6.9	12 h 26	79	Strong coverage
October	16.6°C	3.3°C	84 mm	7.1	10 h 59	44	Strong coverage
November	7.8°C	-2.7°C	58 mm	6	9 h 43	9	Strong coverage
December	0.4°C	-8.5°C	43 mm	6.2	9 h 05	5	Strong coverage

What has changed

Worthington runs +0.2°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

+0.9

Feb

-0.2

Mar

+0.9

Apr

-0.8

May

-0.6

Jun

-0.1

Jul

-0.7

Aug

-0.4

Sep

+1.2

Oct

0.0

Nov

+0.1

Dec

+2.1

September daytime highs, 2011–2025. Last recorded: 25.5°C.

Records at CASCADE, 1947–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	15.0°C25 Jan 1981	-37.2°C10 Jan 1982	41 mm30 Jan 2006	112 mm1960 · driest 0 mm in 2022	79
February	22.8°C23 Feb 2017	-36.1°C3 Feb 1996	57 mm26 Feb 2007	96 mm2019 · driest 0 mm in 1987	79
March	30.6°C30 Mar 1986	-32.2°C1 Mar 1962	54 mm31 Mar 1998	154 mm2004 · driest 4 mm in 1981	79
April	35.0°C22 Apr 1980	-19.4°C7 Apr 1982	87 mm18 Apr 2013	232 mm2013 · driest 13 mm in 2021	79
May	35.6°C28 May 2018	-6.7°C3 May 2005	79 mm13 May 1978	225 mm1974 · driest 5 mm in 1992	79
June	38.3°C22 Jun 1988	1.7°C11 Jun 1972	128 mm4 Jun 2002	320 mm1969 · driest 4 mm in 2022	78
July	39.4°C26 Jul 2012	5.6°C31 Jul 1971	109 mm8 Jul 1951	311 mm1993 · driest 8 mm in 1991	79
August	39.4°C1 Aug 1988	1.7°C20 Aug 1950	192 mm22 Aug 2002	296 mm1981 · driest 6 mm in 1969	79
September	36.7°C10 Sep 2013	-6.1°C29 Sep 1949	140 mm21 Sep 2001	269 mm2001 · driest 0 mm in 2015	79
October	33.3°C4 Oct 1997	-12.2°C29 Oct 1952	82 mm2 Oct 2019	201 mm2009 · driest 0 mm in 1964	79
November	25.0°C9 Nov 1999	-25.6°C26 Nov 1977	84 mm4 Nov 2003	194 mm2003 · driest 0 mm in 2023	79
December	20.6°C16 Dec 2021	-33.3°C25 Dec 1983	44 mm14 Dec 2015	114 mm2015 · driest 2 mm in 2019	79

Typical days per month at CASCADE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	<1	6
February	0	0	26	1	5
March	<1	0	23	2	3
April	2	<1	10	4	<1
May	9	2	1	4	0
June	21	7	0	5	0
July	26	11	0	3	0
August	25	7	0	4	0
September	13	3	<1	3	0
October	3	<1	10	2	<1
November	<1	0	22	2	1
December	0	0	28	1	5

How often, not how much — every day in CASCADE’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	0%	17%	2%	12%	-6.4–0.6°C
February	<1%	18%	3%	15%	-4.1–4.4°C
March	4%	22%	6%	24%	3.7–10.5°C
April	20%	28%	10%	34%	12.0–17.9°C
May	47%	30%	11%	36%	19.5–24.4°C
June	67%	30%	13%	37%	25.3–28.7°C
July	75%	24%	10%	24%	27.0–30.9°C
August	75%	24%	10%	26%	25.8–29.9°C
September	63%	23%	9%	24%	21.7–26.0°C
October	29%	21%	7%	21%	14.3–19.8°C
November	4%	19%	6%	17%	4.0–10.9°C
December	0%	20%	4%	18%	-3.2–3.8°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.

1948Each stripe is one year’s mean temperature against the 74-year average. Warmest: 1998. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4882504
NOAA station: USC00131257 · CASCADE
Station distance: 14.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 42.40°, 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 CASCADE is what differs

Dyersville→Monticello→Cascade→Epworth→Farley→Hopkinton→

Or put two places side by side: Worthington vs Dyersville

Best time to visitWorthington.

September

July

September

The whole year,without the guesswork.

Worthington runs +0.2°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Worthington.

The whole year,
without the guesswork.

Worthington runs +0.2°C
on the 1961–1990 baseline.

Nearby, measured,
and named.