United States · 1991–2020

Best time to visit
Moline.

September leads for comfortable weather in Moline: typically 25.1°C by day, 14.2°C at night, with 84 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high25.1°C

Typical low14.2°C

Rain in September84 mm

Comfort

September

September · May · August

85climate match

Beach

July

July · August · June

79climate match

Outdoors

October

October · September · April

78climate match

The weakest month is January, scoring 5 against September’s 85 — days reach only -0.3°C, 24° 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

5-0.3° / -8.9°

Feb

52.6° / -6.4°

Mar

159.4° / -0.8°

Apr

4416.6° / 5.5°

May

7022.7° / 11.8°

Jun

6427.6° / 17.5°

Jul

6129.1° / 19.7°

Aug

6628.2° / 18.7°

Sep

8525.1° / 14.2°

Oct

5717.9° / 7.4°

Nov

209.5° / 0.4°

Dec

52.5° / -5.4°

Monthly climate evidence for Moline — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-0.3°C	-8.9°C	38 mm	5.9	9 h 29	5	Strong coverage
February	2.6°C	-6.4°C	46 mm	5.5	10 h 32	5	Strong coverage
March	9.4°C	-0.8°C	67 mm	7.1	11 h 48	15	Strong coverage
April	16.6°C	5.5°C	97 mm	8.8	13 h 16	44	Strong coverage
May	22.7°C	11.8°C	130 mm	10	14 h 30	70	Strong coverage
June	27.6°C	17.5°C	133 mm	9.5	15 h 10	64	Strong coverage
July	29.1°C	19.7°C	107 mm	6.7	14 h 54	61	Strong coverage
August	28.2°C	18.7°C	102 mm	6.9	13 h 50	66	Strong coverage
September	25.1°C	14.2°C	84 mm	6.5	12 h 25	85	Strong coverage
October	17.9°C	7.4°C	73 mm	6.6	11 h 01	57	Strong coverage
November	9.5°C	0.4°C	58 mm	6.3	9 h 47	20	Strong coverage
December	2.5°C	-5.4°C	51 mm	6.4	9 h 11	5	Strong coverage

Records at ROCK IS L&D 15, 1872–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	20.6°C31 Jan 1989	-35.6°C31 Jan 2019	50 mm29 Jan 2006	107 mm1889 · driest 5 mm in 1986	49
February	24.4°C27 Feb 2024	-30.0°C2 Feb 1996	51 mm9 Feb 1876	110 mm2019 · driest 1 mm in 2026	48
March	31.1°C29 Mar 1986	-25.6°C4 Mar 1873	77 mm13 Mar 2006	159 mm2020 · driest 9 mm in 1875	46
April	33.9°C25 Apr 1986	-8.9°C1 Apr 1874	58 mm10 Apr 2021	179 mm1999 · driest 24 mm in 2018	48
May	35.6°C11 May 2022	-4.4°C2 May 1875	93 mm26 May 2013	296 mm2013 · driest 10 mm in 1992	48
June	37.8°C25 Jun 1988	2.2°C9 Jun 1889	167 mm17 Jun 1990	405 mm1990 · driest 24 mm in 1873	49
July	40.0°C6 Jul 1874	3.3°C25 Jul 1890	131 mm13 Jul 1889	286 mm1992 · driest 15 mm in 2012	49
August	39.4°C11 Aug 1874	6.1°C28 Aug 1891	102 mm23 Aug 1996	304 mm2016 · driest 7 mm in 1873	48
September	36.7°C9 Sep 2013	0.0°C27 Sep 1872	102 mm18 Sep 1874	216 mm2008 · driest 4 mm in 2002	47
October	35.0°C3 Oct 2006	-11.1°C31 Oct 1873	81 mm18 Oct 1998	181 mm1985 · driest 4 mm in 1872	46
November	26.7°C1 Nov 2000	-23.9°C29 Nov 1891	67 mm17 Nov 2015	175 mm1985 · driest 7 mm in 2021	48
December	22.2°C15 Dec 2021	-32.2°C24 Dec 1872	57 mm31 Dec 1875	131 mm2015 · driest 5 mm in 1874	48

Typical days per month at ROCK IS L&D 15, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	28	1	3
February	0	0	24	1	2
March	<1	0	18	2	<1
April	3	<1	4	3	<1
May	12	3	<1	5	0
June	23	9	0	4	0
July	28	13	0	4	0
August	26	10	0	3	0
September	16	5	0	3	0
October	5	<1	2	2	<1
November	<1	0	14	2	<1
December	0	0	25	2	1

How often, not how much — every day in ROCK IS L&D 15’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%	17%	4%	12%	-4.5–4.0°C
February	<1%	17%	4%	12%	-3.5–7.0°C
March	7%	23%	7%	22%	5.4–12.8°C
April	25%	27%	10%	30%	14.1–19.8°C
May	53%	29%	13%	34%	20.7–25.3°C
June	68%	29%	12%	31%	26.2–30.0°C
July	77%	22%	11%	20%	27.6–31.6°C
August	77%	23%	10%	20%	26.0–30.0°C
September	69%	20%	9%	18%	22.9–27.4°C
October	33%	20%	6%	19%	15.3–20.3°C
November	6%	20%	7%	19%	5.1–12.4°C
December	<1%	19%	5%	14%	-2.2–5.9°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.

1873Each stripe is one year’s mean temperature against the 41-year average. Warmest: 2024. Coolest: 1875.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4902476
NOAA station: USC00117391 · ROCK IS L&D 15
Station distance: 4.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 41.51°, 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 ROCK IS L&D 15 is what differs

Davenport→Rock Island→Bettendorf→Blue Grass→Buffalo→Andalusia→

Or put two places side by side: Moline vs Davenport

Best time to visitMoline.