United States · 1991–2020

Best time to visit
Colorado.

March leads for comfortable weather in Colorado: typically 23.2°C by day, 9.2°C at night, with 72 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMarch

Typical high23.2°C

Typical low9.2°C

Rain in March72 mm

Comfort

March

March · April · November

80climate match

Beach

June

June · July · May

74climate match

Outdoors

February

February · March · November

83climate match

The weakest month is August, scoring 40 against March’s 80 — days average 36.3°C, 12° above 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

5017.3° / 3.3°

Feb

6219.4° / 5.1°

Mar

8023.2° / 9.2°

Apr

7827° / 13°

May

6130.4° / 18°

Jun

4833.9° / 21.4°

Jul

4535.5° / 22.5°

Aug

4036.3° / 22.5°

Sep

5133.2° / 19.7°

Oct

6928.5° / 13.7°

Nov

7522.6° / 8.2°

Dec

5318.1° / 4°

Monthly climate evidence for Colorado — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	17.3°C	3.3°C	72 mm	5.3	10 h 24	50	Strong coverage
February	19.4°C	5.1°C	60 mm	5.1	11 h 05	62	Strong coverage
March	23.2°C	9.2°C	72 mm	4.8	11 h 54	80	Strong coverage
April	27°C	13°C	89 mm	4.2	12 h 51	78	Strong coverage
May	30.4°C	18°C	109 mm	5.8	13 h 39	61	Strong coverage
June	33.9°C	21.4°C	80 mm	5.2	14 h 04	48	Strong coverage
July	35.5°C	22.5°C	51 mm	4.2	13 h 54	45	Strong coverage
August	36.3°C	22.5°C	70 mm	3.6	13 h 13	40	Strong coverage
September	33.2°C	19.7°C	94 mm	5	12 h 18	51	Strong coverage
October	28.5°C	13.7°C	119 mm	5.1	11 h 23	69	Strong coverage
November	22.6°C	8.2°C	81 mm	4.9	10 h 36	75	Strong coverage
December	18.1°C	4°C	78 mm	5	10 h 13	53	Strong coverage

What has changed

Colorado runs +1.1°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

+1.4

Feb

+2.0

Mar

+1.8

Apr

+0.5

May

+0.7

Jun

+1.0

Jul

+0.9

Aug

+1.1

Sep

+1.6

Oct

+1.4

Nov

+0.5

Dec

+0.5

March daytime highs, 2011–2020. Last recorded: 25.3°C.

Records at SMITHVILLE, 1921–2021
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	31.1°C16 Jan 1936	-18.3°C18 Jan 1930	114 mm4 Jan 1932	348 mm1991 · driest 0 mm in 2006	95
February	35.6°C21 Feb 1986	-14.4°C2 Feb 1951	100 mm20 Feb 2003	238 mm1992 · driest 0 mm in 2007	96
March	36.7°C7 Mar 1991	-8.3°C4 Mar 2002	86 mm27 Mar 1923	195 mm2007 · driest 3 mm in 1925	95
April	38.9°C2 Apr 1939	-5.6°C5 Apr 2011	167 mm21 Apr 1926	348 mm1957 · driest 0 mm in 2003	96
May	39.4°C15 May 1955	-1.1°C4 May 2013	166 mm25 May 1933	346 mm2016 · driest 1 mm in 2018	97
June	41.7°C30 Jun 2013	7.2°C3 Jun 1993	408 mm30 Jun 1940	589 mm1940 · driest 0 mm in 2008	95
July	43.9°C27 Jul 1954	12.2°C5 Jul 2011	152 mm1 Jul 1936	332 mm1936 · driest 0 mm in 1951	96
August	43.3°C17 Aug 1943	11.7°C15 Aug 1989	328 mm27 Aug 2017	654 mm2017 · driest 0 mm in 1929	95
September	43.9°C5 Sep 2000	3.9°C29 Sep 2008	169 mm17 Sep 1964	335 mm1964 · driest 1 mm in 1947	97
October	40.6°C2 Oct 1938	-3.9°C28 Oct 2008	242 mm18 Oct 1998	413 mm1998 · driest 0 mm in 1996	95
November	34.4°C5 Nov 1948	-6.7°C25 Nov 1938	112 mm5 Nov 1940	269 mm2004 · driest 0 mm in 1970	94
December	30.6°C5 Dec 2017	-16.1°C22 Dec 1929	93 mm23 Dec 1986	271 mm1991 · driest 0 mm in 2019	94

Typical days per month at SMITHVILLE, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	3	0	11	2
February	6	<1	6	2
March	14	2	2	2
April	22	7	<1	2
May	29	20	0	3
June	29	27	0	2
July	31	30	0	2
August	30	30	0	2
September	29	26	0	3
October	25	14	<1	3
November	13	2	3	2
December	4	0	9	2

The best month has moved. On the 1961–1990 numbers the strongest month here was April (scoring 83); on 2011–2025 it is March (85). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in SMITHVILLE’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	34%	20%	7%	21%	13.4–20.1°C
February	43%	22%	8%	22%	15.7–23.0°C
March	65%	18%	7%	13%	20.4–25.4°C
April	79%	17%	8%	15%	24.8–28.9°C
May	80%	20%	10%	19%	28.1–32.4°C
June	82%	18%	9%	18%	31.6–35.6°C
July	86%	14%	6%	11%	33.2–37.7°C
August	87%	13%	5%	11%	34.5–38.2°C
September	80%	20%	9%	19%	30.9–35.5°C
October	81%	16%	8%	14%	26.2–31.5°C
November	61%	17%	7%	15%	19.2–25.3°C
December	39%	20%	8%	20%	15.2–21.0°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.

1922Each stripe is one year’s mean temperature against the 86-year average. Warmest: 1939. Coolest: 1987.2017

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 4682620
NOAA station: USC00418415 · SMITHVILLE
Station distance: 3.9 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 25 usable years
Daylight: Calculated from latitude 29.99°, 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 SMITHVILLE is what differs

Bastrop→Smithville→Circle D-KC Estates→Northrup→Alum Creek→Cistern→

Or put two places side by side: Colorado vs Bastrop

Best time to visitColorado.

March

June

February

The whole year,without the guesswork.

Colorado runs +1.1°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Colorado.

The whole year,
without the guesswork.

Colorado runs +1.1°C
on the 1961–1990 baseline.

Nearby, measured,
and named.