United States · 1991–2020

Best time to visit
Rockford.

September leads for comfortable weather in Rockford: typically 23.5°C by day, 10.6°C at night, with 97 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high23.5°C

Typical low10.6°C

Rain in September97 mm

Comfort

September

September · August · June

78climate match

Beach

July

July · August · June

63climate match

Outdoors

September

September · May · October

73climate match

The weakest month is January, scoring 5 against September’s 78 — days reach only -3.6°C, 28° 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

5-3.6° / -13°

Feb

5-1° / -10.7°

Mar

56.5° / -3.9°

Apr

3415° / 2.5°

May

6121.3° / 9°

Jun

6826.4° / 14.6°

Jul

6628° / 16.6°

Aug

7526.8° / 15.4°

Sep

7823.5° / 10.6°

Oct

4516° / 3.8°

Nov

86.9° / -3.1°

Dec

5-0.7° / -9.5°

Monthly climate evidence for Rockford — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-3.6°C	-13°C	26 mm	5.4	9 h 20	5	Strong coverage
February	-1°C	-10.7°C	29 mm	5.2	10 h 27	5	Strong coverage
March	6.5°C	-3.9°C	49 mm	6.8	11 h 47	5	Strong coverage
April	15°C	2.5°C	95 mm	8.7	13 h 20	34	Strong coverage
May	21.3°C	9°C	128 mm	10.7	14 h 38	61	Strong coverage
June	26.4°C	14.6°C	156 mm	10.3	15 h 21	68	Strong coverage
July	28°C	16.6°C	125 mm	8.2	15 h 04	66	Strong coverage
August	26.8°C	15.4°C	109 mm	7.7	13 h 56	75	Strong coverage
September	23.5°C	10.6°C	97 mm	7.2	12 h 26	78	Strong coverage
October	16°C	3.8°C	69 mm	7.4	10 h 57	45	Strong coverage
November	6.9°C	-3.1°C	44 mm	5.4	9 h 39	8	Strong coverage
December	-0.7°C	-9.5°C	34 mm	5.5	9 h 01	5	Strong coverage

What has changed

Rockford runs -0.3°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

+0.8

Feb

-0.8

Mar

+0.9

Apr

-1.4

May

-1.1

Jun

-0.7

Jul

-1.4

Aug

-1.5

Sep

+0.5

Oct

-1.1

Nov

+0.3

Dec

+2.2

September daytime highs, 2011–2025. Last recorded: 24.7°C.

Records at CHARLES CITY, 1893–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	17.2°C26 Jan 2002	-36.7°C16 Jan 2009	36 mm4 Jan 1971	74 mm1949 · driest 0 mm in 1903	89
February	23.9°C26 Feb 2024	-35.6°C2 Feb 1996	40 mm25 Feb 2007	84 mm2007 · driest 0 mm in 1987	89
March	30.0°C29 Mar 1895	-35.6°C1 Mar 1962	61 mm26 Mar 2004	137 mm2004 · driest 7 mm in 1994	88
April	34.4°C22 Apr 1980	-16.1°C6 Apr 1982	78 mm18 Apr 1976	196 mm1991 · driest 17 mm in 1997	89
May	36.7°C14 May 2013	-6.1°C3 May 2005	90 mm10 May 1963	259 mm2004 · driest 31 mm in 1894	89
June	38.9°C8 Jun 1985	1.1°C12 Jun 1903	93 mm19 Jun 1904	300 mm2018 · driest 10 mm in 2023	90
July	42.2°C21 Jul 1901	3.9°C30 Jul 1899	169 mm21 Jul 1999	470 mm1999 · driest 12 mm in 2012	90
August	40.0°C17 Aug 1988	2.2°C29 Aug 1893	160 mm10 Aug 1980	345 mm1979 · driest 19 mm in 2003	89
September	37.2°C9 Sep 1955	-7.2°C30 Sep 1899	161 mm22 Sep 2016	402 mm2016 · driest 8 mm in 1952	89
October	35.0°C5 Oct 1963	-12.8°C30 Oct 1895	82 mm9 Oct 1970	201 mm2009 · driest 0 mm in 1952	89
November	25.6°C8 Nov 1999	-25.6°C26 Nov 1977	71 mm1 Nov 1991	136 mm1991 · driest 0 mm in 2002	88
December	20.0°C15 Dec 2021	-33.9°C25 Dec 2000	38 mm14 Dec 2015	112 mm2015 · driest 1 mm in 1898	88

Typical days per month at CHARLES CITY, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	<1	7
February	0	0	27	<1	6
March	<1	0	24	2	4
April	2	<1	10	3	1
May	9	2	1	4	<1
June	20	6	0	5	0
July	26	10	0	4	0
August	23	6	0	3	0
September	13	3	<1	3	0
October	3	<1	8	2	<1
November	<1	0	22	2	2
December	0	0	29	1	6

How often, not how much — every day in CHARLES CITY’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%	16%	2%	10%	-8.0–-0.4°C
February	0%	16%	3%	11%	-5.9–3.8°C
March	3%	23%	6%	22%	1.7–9.7°C
April	20%	29%	10%	36%	11.0–18.4°C
May	47%	31%	12%	38%	19.5–24.1°C
June	66%	32%	14%	40%	24.9–28.4°C
July	74%	26%	11%	24%	26.6–30.9°C
August	75%	25%	10%	25%	25.5–29.7°C
September	61%	24%	9%	25%	21.5–25.8°C
October	28%	21%	7%	21%	14.0–19.6°C
November	3%	18%	5%	14%	2.8–9.8°C
December	0%	17%	3%	12%	-5.1–3.0°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.

1893Each stripe is one year’s mean temperature against the 85-year average. Warmest: 2012. Coolest: 1951.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4873401
NOAA station: USC00131402 · CHARLES CITY
Station distance: 22.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 30 usable years
Daylight: Calculated from latitude 43.05°, 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 CHARLES CITY is what differs

Charles City→Nashua→Floyd→Marble Rock→Colwell→Bassett→

Or put two places side by side: Rockford vs Charles City

Best time to visitRockford.

September

July

September

The whole year,without the guesswork.

Rockford runs -0.3°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Rockford.

The whole year,
without the guesswork.

Rockford runs -0.3°C
on the 1961–1990 baseline.

Nearby, measured,
and named.