United States · 1991–2020

Best time to visit
Greeley.

September leads for comfortable weather in Greeley: typically 23.5°C by day, 9.6°C at night, with 98 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high23.5°C

Typical low9.6°C

Rain in September98 mm

Comfort

September

September · August · June

76climate match

Beach

July

July · August · June

62climate match

Outdoors

September

September · May · October

73climate match

The weakest month is January, scoring 5 against September’s 76 — days reach only -3.2°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

5-3.2° / -13.1°

Feb

5-0.7° / -11°

Mar

56.6° / -4.4°

Apr

3014.4° / 1.7°

May

6120.9° / 8.4°

Jun

6926.2° / 14.3°

Jul

6827.9° / 16.2°

Aug

7527° / 14.6°

Sep

7623.5° / 9.6°

Oct

4316.2° / 3.1°

Nov

77.4° / -3.4°

Dec

50.1° / -9.2°

Monthly climate evidence for Greeley — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-3.2°C	-13.1°C	29 mm	5.5	9 h 22	5	Strong coverage
February	-0.7°C	-11°C	34 mm	5.4	10 h 29	5	Strong coverage
March	6.6°C	-4.4°C	53 mm	7.1	11 h 48	5	Strong coverage
April	14.4°C	1.7°C	97 mm	9.1	13 h 19	30	Strong coverage
May	20.9°C	8.4°C	114 mm	10.1	14 h 35	61	Strong coverage
June	26.2°C	14.3°C	152 mm	10.1	15 h 17	69	Strong coverage
July	27.9°C	16.2°C	122 mm	8.2	15 h 01	68	Strong coverage
August	27°C	14.6°C	105 mm	8.3	13 h 54	75	Strong coverage
September	23.5°C	9.6°C	98 mm	7.5	12 h 26	76	Strong coverage
October	16.2°C	3.1°C	79 mm	7.5	10 h 58	43	Strong coverage
November	7.4°C	-3.4°C	56 mm	5.9	9 h 42	7	Strong coverage
December	0.1°C	-9.2°C	40 mm	6.3	9 h 04	5	Strong coverage

Records at MANCHESTER #2, 1976–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	16.1°C27 Jan 2002	-37.8°C16 Jan 2009	62 mm9 Jan 2026	83 mm2023 · driest 3 mm in 2025	50
February	22.2°C27 Feb 2024	-36.7°C1 Feb 2019	47 mm22 Feb 1981	82 mm2008 · driest 0 mm in 1987	50
March	30.6°C30 Mar 1986	-30.0°C1 Mar 2015	74 mm31 Mar 1998	135 mm1998 · driest 4 mm in 1994	50
April	36.1°C22 Apr 1980	-22.8°C6 Apr 1982	77 mm13 Apr 1991	232 mm2026 · driest 27 mm in 2021	51
May	35.0°C28 May 2018	-7.2°C3 May 2005	122 mm30 May 2008	249 mm2008 · driest 17 mm in 1981	51
June	38.3°C22 Jun 1988	1.7°C1 Jun 1993	102 mm4 Jun 2002	282 mm2000 · driest 20 mm in 1985	51
July	38.9°C26 Jul 2012	5.6°C7 Jul 1984	103 mm26 Jul 1980	305 mm2025 · driest 25 mm in 1991	50
August	38.9°C24 Aug 2023	3.3°C21 Aug 2004	142 mm2 Aug 1981	375 mm1981 · driest 17 mm in 1984	50
September	36.1°C4 Sep 2023	-5.0°C29 Sep 1984	145 mm23 Sep 2016	270 mm2018 · driest 4 mm in 2004	50
October	33.9°C4 Oct 1997	-11.7°C30 Oct 1988	96 mm8 Oct 2007	229 mm2007 · driest 10 mm in 1994	50
November	26.1°C9 Nov 1999	-26.7°C26 Nov 1977	90 mm4 Nov 2003	166 mm2003 · driest 3 mm in 1976	50
December	21.1°C16 Dec 2021	-32.2°C25 Dec 2000	46 mm14 Dec 2015	127 mm2015 · driest 4 mm in 1995	50

Typical days per month at MANCHESTER #2, 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	25	2	3
April	2	<1	12	3	1
May	9	2	2	4	<1
June	20	6	0	5	0
July	26	9	0	4	0
August	24	6	0	3	0
September	13	3	<1	3	0
October	3	<1	11	2	<1
November	<1	0	22	2	2
December	0	0	29	1	6

How often, not how much — every day in MANCHESTER #2’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%	11%	-7.1–0.2°C
February	<1%	17%	3%	11%	-5.0–4.3°C
March	5%	23%	6%	24%	3.3–10.5°C
April	20%	30%	10%	39%	11.6–17.7°C
May	44%	32%	12%	40%	18.7–24.2°C
June	65%	32%	14%	41%	24.9–28.7°C
July	73%	27%	13%	28%	26.2–30.6°C
August	72%	27%	11%	30%	25.4–29.1°C
September	61%	24%	9%	26%	21.5–26.1°C
October	24%	23%	8%	24%	13.7–18.4°C
November	3%	20%	6%	18%	2.9–10.7°C
December	<1%	20%	4%	14%	-4.8–3.9°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.

1978Each stripe is one year’s mean temperature against the 46-year average. Warmest: 1998. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4859125
NOAA station: USC00135086 · MANCHESTER #2
Station distance: 15.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 29 usable years
Daylight: Calculated from latitude 42.59°, 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 MANCHESTER #2 is what differs

Manchester→Earlville→Delhi→Holy Cross→Dundee→Delaware→

Or put two places side by side: Greeley vs Manchester

Best time to visitGreeley.

September

July

September

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Greeley.

The whole year,
without the guesswork.

Nearby, measured,
and named.