United States · 1991–2020

Best time to visit
Colfax.

September leads for comfortable weather in Colfax: typically 24.7°C by day, 12.1°C at night, with 87 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortSeptember

Typical high24.7°C

Typical low12.1°C

Rain in September87 mm

Comfort

September

September · July · August

82climate match

Beach

July

July · August · June

78climate match

Outdoors

May

May · October · September

71climate match

The weakest month is January, scoring 5 against September’s 82 — days reach only -0.9°C, 25° 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

5-0.9° / -10.4°

Feb

50.9° / -9.4°

Mar

159.5° / -1.8°

Apr

4216.7° / 4°

May

6721.9° / 10.5°

Jun

6527.1° / 16.1°

Jul

6829.1° / 17.8°

Aug

6827.9° / 16.4°

Sep

8224.7° / 12.1°

Oct

4917° / 5.1°

Nov

209.6° / -1.4°

Dec

51.8° / -7.6°

Monthly climate evidence for Colfax — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	-0.9°C	-10.4°C	27 mm	5.4	9 h 28	5	Good coverage
February	0.9°C	-9.4°C	34 mm	6.1	10 h 32	5	Good coverage
March	9.5°C	-1.8°C	61 mm	7.1	11 h 48	15	Good coverage
April	16.7°C	4°C	102 mm	8.7	13 h 16	42	Good coverage
May	21.9°C	10.5°C	117 mm	10	14 h 30	67	Good coverage
June	27.1°C	16.1°C	150 mm	9.8	15 h 11	65	Good coverage
July	29.1°C	17.8°C	87 mm	6.4	14 h 55	68	Good coverage
August	27.9°C	16.4°C	120 mm	8.7	13 h 51	68	Good coverage
September	24.7°C	12.1°C	87 mm	6.9	12 h 25	82	Good coverage
October	17°C	5.1°C	82 mm	7	11 h 01	49	Good coverage
November	9.6°C	-1.4°C	43 mm	5.3	9 h 46	20	Good coverage
December	1.8°C	-7.6°C	49 mm	5.4	9 h 10	5	Good coverage

Records at DES MOINES 17 E, 2004–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	17.7°C5 Jan 2012	-30.1°C16 Jan 2009	29 mm8 Jan 2026	54 mm2024 · driest 6 mm in 2025	22
February	25.2°C26 Feb 2024	-28.7°C16 Feb 2021	35 mm24 Feb 2007	67 mm2008 · driest 3 mm in 2006	22
March	33.2°C21 Mar 2026	-23.7°C3 Mar 2014	47 mm6 Mar 2026	152 mm2009 · driest 13 mm in 2015	22
April	34.7°C1 Apr 2010	-10.7°C4 Apr 2018	78 mm17 Apr 2013	155 mm2013 · driest 27 mm in 2021	22
May	35.7°C28 May 2018	-2.7°C3 May 2011	61 mm21 May 2024	231 mm2013 · driest 33 mm in 2006	22
June	37.0°C17 Jun 2021	5.5°C1 Jun 2012	115 mm26 Jun 2008	330 mm2010 · driest 45 mm in 2017	22
July	39.7°C25 Jul 2012	8.8°C29 Jul 2013	70 mm2 Jul 2024	239 mm2025 · driest 18 mm in 2012	22
August	37.8°C30 Aug 2013	6.5°C18 Aug 2012	109 mm10 Aug 2010	374 mm2010 · driest 13 mm in 2013	21
September	37.6°C9 Sep 2013	-0.6°C23 Sep 2012	74 mm3 Sep 2018	224 mm2018 · driest 0 mm in 2004	22
October	33.8°C1 Oct 2023	-7.2°C19 Oct 2022	94 mm1 Oct 2019	202 mm2019 · driest 8 mm in 2011	22
November	25.9°C8 Nov 2006	-17.8°C12 Nov 2019	37 mm4 Nov 2022	93 mm2024 · driest 7 mm in 2023	22
December	24.0°C15 Dec 2021	-27.3°C24 Dec 2013	45 mm13 Dec 2015	125 mm2015 · driest 9 mm in 2017	22

Typical days per month at DES MOINES 17 E, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	29	<1
February	0	0	26	1
March	<1	0	21	2
April	3	<1	7	3
May	10	1	<1	4
June	22	7	0	5
July	28	12	0	3
August	26	8	0	4
September	15	4	<1	3
October	3	<1	6	2
November	<1	0	18	1
December	0	0	28	2

How often, not how much — every day in DES MOINES 17 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	0%	16%	3%	13%	-3.9–1.3°C
February	1%	18%	3%	16%	-3.8–7.3°C
March	11%	23%	6%	26%	6.3–14.7°C
April	26%	28%	11%	32%	14.2–18.8°C
May	48%	31%	12%	39%	20.2–24.6°C
June	69%	30%	14%	34%	25.8–28.8°C
July	78%	22%	11%	21%	27.4–30.6°C
August	73%	26%	10%	29%	26.8–29.8°C
September	72%	21%	8%	22%	22.5–27.4°C
October	32%	21%	7%	19%	14.5–20.2°C
November	8%	17%	4%	13%	6.5–12.1°C
December	<1%	17%	5%	13%	-1.5–6.2°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.

2005Each stripe is one year’s mean temperature against the 21-year average. Warmest: 2012. Coolest: 2008.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4852212
NOAA station: USW00054902 · DES MOINES 17 E
Station distance: 13.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 16 usable years
Daylight: Calculated from latitude 41.68°, 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 DES MOINES 17 E is what differs

Altoona→Mitchellville→Monroe→Prairie City→Hartford→Runnells→

Or put two places side by side: Colfax vs Altoona

Best time to visitColfax.

September

July

May

The whole year,without the guesswork.

Nearby, measured,and named.

Best time to visit
Colfax.

The whole year,
without the guesswork.

Nearby, measured,
and named.