United States · 1991–2020

Best time to visit
Greeley.

September leads for comfortable weather in Greeley: typically 27.5°C by day, 14.4°C at night, with 101 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high27.5°C

Typical low14.4°C

Rain in September101 mm

Comfort

September

September · May · October

75climate match

Beach

August

August · July · June

72climate match

Outdoors

October

October · April · March

82climate match

The weakest month is January, scoring 5 against September’s 75 — days reach only 5.5°C, 18° below the 24°C the score treats as ideal, and nights drop to -6.1°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

55.5° / -6.1°

Feb

118.4° / -4.2°

Mar

3814.4° / 1.3°

Apr

5819.7° / 6.6°

May

7424.4° / 12.5°

Jun

6029.5° / 17.7°

Jul

5032.3° / 20.2°

Aug

5531.8° / 19.2°

Sep

7527.5° / 14.4°

Oct

6921.1° / 7.8°

Nov

3713.5° / 1.4°

Dec

97.2° / -3.8°

Monthly climate evidence for Greeley — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	5.5°C	-6.1°C	31 mm	4	9 h 46	5	Strong coverage
February	8.4°C	-4.2°C	46 mm	4.3	10 h 42	11	Strong coverage
March	14.4°C	1.3°C	59 mm	5.6	11 h 50	38	Strong coverage
April	19.7°C	6.6°C	100 mm	7.2	13 h 08	58	Strong coverage
May	24.4°C	12.5°C	141 mm	9.2	14 h 14	74	Strong coverage
June	29.5°C	17.7°C	124 mm	7.8	14 h 49	60	Strong coverage
July	32.3°C	20.2°C	111 mm	6.3	14 h 35	50	Strong coverage
August	31.8°C	19.2°C	102 mm	5.7	13 h 39	55	Strong coverage
September	27.5°C	14.4°C	101 mm	6.2	12 h 23	75	Strong coverage
October	21.1°C	7.8°C	81 mm	5.8	11 h 08	69	Strong coverage
November	13.5°C	1.4°C	52 mm	4.3	10 h 02	37	Strong coverage
December	7.2°C	-3.8°C	40 mm	3.9	9 h 30	9	Strong coverage

What has changed

Greeley runs -0.5°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

+0.1

Feb

-1.0

Mar

-0.3

Apr

-1.9

May

-1.7

Jun

+0.4

Jul

-1.0

Aug

-1.2

Sep

+0.2

Oct

-0.6

Nov

-0.3

Dec

+1.3

September daytime highs, 2011–2025. Last recorded: 27.2°C.

Records at GARNETT 1 E, 1906–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	23.3°C8 Jan 2003	-28.3°C12 Jan 1912	82 mm19 Jan 1907	171 mm1907 · driest 0 mm in 1986	87
February	27.8°C29 Feb 1972	-29.4°C17 Feb 2021	79 mm21 Feb 1997	148 mm1911 · driest 0 mm in 2017	88
March	34.4°C22 Mar 2026	-19.4°C3 Mar 2014	100 mm4 Mar 2004	240 mm1973 · driest 7 mm in 1995	87
April	33.3°C26 Apr 2012	-9.4°C3 Apr 1975	109 mm19 Apr 1970	268 mm1994 · driest 5 mm in 1962	89
May	37.8°C31 May 1913	-3.9°C4 May 1907	135 mm21 May 2019	344 mm2019 · driest 21 mm in 1994	87
June	41.7°C27 Jun 1980	5.6°C5 Jun 1993	135 mm22 Jun 1998	357 mm1967 · driest 2 mm in 1911	86
July	46.7°C14 Jul 1954	7.8°C3 Jul 2013	144 mm1 Jul 2007	419 mm1993 · driest 4 mm in 1975	86
August	42.2°C11 Aug 1913	6.7°C29 Aug 1988	175 mm17 Aug 1996	346 mm2019 · driest 2 mm in 2000	85
September	41.7°C2 Sep 2000	-2.2°C30 Sep 1984	153 mm21 Sep 1947	322 mm1970 · driest 9 mm in 1956	85
October	35.6°C2 Oct 1909	-7.8°C19 Oct 2022	107 mm11 Oct 1973	244 mm1998 · driest 0 mm in 1952	85
November	30.0°C4 Nov 1978	-16.7°C17 Nov 1959	99 mm15 Nov 1985	204 mm1964 · driest 0 mm in 1954	88
December	23.9°C7 Dec 1966	-30.6°C23 Dec 1989	60 mm15 Dec 1971	127 mm1984 · driest 0 mm in 1950	86

Typical days per month at GARNETT 1 E, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	25	1	2
February	<1	0	21	2	2
March	2	<1	14	2	<1
April	6	<1	4	3	<1
May	16	4	<1	4	0
June	27	16	0	4	0
July	29	22	0	3	0
August	29	21	0	3	0
September	21	10	0	3	0
October	9	2	3	2	<1
November	<1	0	13	2	<1
December	0	0	23	1	1

The best month has moved. On the 1961–1990 numbers the strongest month here was May (scoring 79); on 2011–2025 it is September (82). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in GARNETT 1 E’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%	14%	3%	10%	1.0–8.6°C
February	6%	16%	5%	12%	3.5–12.6°C
March	24%	21%	8%	21%	9.7–18.1°C
April	46%	26%	11%	28%	17.7–22.9°C
May	62%	31%	14%	37%	22.4–27.6°C
June	72%	29%	14%	32%	27.7–31.7°C
July	78%	21%	10%	19%	30.5–35.2°C
August	81%	20%	10%	21%	29.5–35.1°C
September	76%	23%	10%	22%	25.5–30.9°C
October	55%	20%	9%	19%	18.9–23.7°C
November	17%	15%	6%	11%	10.3–16.4°C
December	2%	14%	5%	10%	3.5–9.9°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.

1906Each stripe is one year’s mean temperature against the 78-year average. Warmest: 1954. Coolest: 2014.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4272369
NOAA station: USC00143008 · GARNETT 1 E
Station distance: 12.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 38.37°, 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 GARNETT 1 E is what differs

Garnett→Richmond→Parker→Lane→Welda→Kincaid→

Or put two places side by side: Greeley vs Garnett

Best time to visitGreeley.