United States · 1991–2020

Best time to visit
Colby.

September leads for comfortable weather in Colby: typically 24.1°C by day, 9.9°C at night, with 48 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24.1°C

Typical low9.9°C

Rain in September48 mm

Comfort

September

September · June · August

86climate match

Beach

July

July · August · June

77climate match

Outdoors

May

May · September · June

91climate match

The weakest month is January, scoring 5 against September’s 86 — days reach only 3.1°C, 21° 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

53.1° / -7.3°

Feb

54.9° / -5.7°

Mar

2510.6° / -1.6°

Apr

4314.7° / 1.4°

May

7120.3° / 6.4°

Jun

8427.2° / 11.7°

Jul

7530.6° / 15.3°

Aug

8128.5° / 13.8°

Sep

8624.1° / 9.9°

Oct

5116.6° / 3.3°

Nov

209.3° / -2.3°

Dec

53.1° / -7.3°

Monthly climate evidence for Colby — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	3.1°C	-7.3°C	27 mm	5.1	9 h 43	5	Good coverage
February	4.9°C	-5.7°C	26 mm	5	10 h 40	5	Good coverage
March	10.6°C	-1.6°C	18 mm	3.7	11 h 50	25	Good coverage
April	14.7°C	1.4°C	27 mm	4.5	13 h 10	43	Good coverage
May	20.3°C	6.4°C	26 mm	4.8	14 h 17	71	Good coverage
June	27.2°C	11.7°C	16 mm	2.6	14 h 53	84	Good coverage
July	30.6°C	15.3°C	35 mm	5.6	14 h 39	75	Good coverage
August	28.5°C	13.8°C	33 mm	5.9	13 h 41	81	Good coverage
September	24.1°C	9.9°C	48 mm	6.4	12 h 24	86	Good coverage
October	16.6°C	3.3°C	40 mm	5.6	11 h 07	51	Good coverage
November	9.3°C	-2.3°C	15 mm	3.1	10 h	20	Good coverage
December	3.1°C	-7.3°C	28 mm	4.6	9 h 27	5	Good coverage

Records at CEDAREDGE 3E, 1996–2020
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	15.0°C17 Jan 2000	-22.8°C15 Jan 2013	22 mm27 Jan 2013	54 mm1997 · driest 4 mm in 2011	23
February	15.6°C15 Feb 2015	-25.0°C2 Feb 2011	29 mm8 Feb 2019	53 mm2019 · driest 0 mm in 2020	24
March	23.9°C22 Mar 2004	-18.3°C3 Mar 2002	22 mm20 Mar 2020	52 mm2020 · driest 1 mm in 1999	23
April	26.7°C28 Apr 2001	-11.1°C12 Apr 1997	28 mm5 Apr 2004	86 mm2004 · driest 0 mm in 2014	24
May	33.9°C30 May 2000	-6.1°C2 May 1997	25 mm6 May 2007	101 mm2015 · driest 1 mm in 2004	24
June	36.1°C30 Jun 2001	0.6°C9 Jun 2014	23 mm12 Jun 2005	44 mm2009 · driest 0 mm in 2004	21
July	37.8°C13 Jul 2003	4.4°C5 Jul 1997	27 mm19 Jul 2013	60 mm2013 · driest 5 mm in 2000	23
August	35.6°C12 Aug 2003	6.7°C28 Aug 2004	42 mm27 Aug 2015	81 mm2010 · driest 1 mm in 1998	22
September	32.8°C5 Sep 2017	-2.8°C24 Sep 2000	30 mm28 Sep 2005	110 mm2004 · driest 5 mm in 2018	23
October	27.8°C1 Oct 2003	-16.1°C30 Oct 2019	30 mm10 Oct 2013	90 mm2006 · driest 1 mm in 1999	23
November	22.2°C8 Nov 1999	-18.3°C30 Nov 2006	17 mm12 Nov 1997	36 mm2015 · driest 0 mm in 2009	22
December	16.1°C3 Dec 1999	-21.1°C18 Dec 1996	37 mm1 Dec 2007	64 mm2007 · driest 4 mm in 2017	23

Typical days per month at CEDAREDGE 3E, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)	Snow days
January	0	0	30	<1	5
February	0	0	25	<1	5
March	0	0	20	<1	3
April	<1	0	12	<1	1
May	7	<1	3	<1	<1
June	22	9	0	<1	0
July	29	20	0	<1	0
August	27	11	0	<1	0
September	15	2	<1	1	0
October	2	0	7	1	<1
November	0	0	21	<1	2
December	0	0	29	<1	5

How often, not how much — every day in CEDAREDGE 3E’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%	14%	0.2–5.5°C
February	0%	18%	2%	12%	2.5–7.5°C
March	4%	13%	<1%	6%	8.6–12.9°C
April	18%	16%	3%	10%	12.6–16.9°C
May	57%	16%	2%	13%	16.7–23.5°C
June	87%	10%	2%	7%	24.5–29.1°C
July	81%	19%	3%	18%	29.4–32.2°C
August	80%	19%	2%	19%	26.8–30.3°C
September	72%	21%	5%	21%	23.1–26.0°C
October	30%	18%	4%	11%	13.4–19.2°C
November	2%	10%	1%	5%	6.9–11.8°C
December	0%	15%	3%	11%	0.9–5.2°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.

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5417456
NOAA station: USC00051443 · CEDAREDGE 3E
Station distance: 7.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 19 usable years
Daylight: Calculated from latitude 38.93°, 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 CEDAREDGE 3E is what differs

Cedaredge→Brimstone Corner→

Or put two places side by side: Colby vs Cedaredge

Best time to visitColby.

September

July

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Colby.

The whole year,
without the guesswork.

Nearby, measured,
and named.