Mexico · 1991–2020

Best time to visit
San Luis Río Colorado.

February leads for comfortable weather in San Luis Río Colorado: typically 23.1°C by day, 6.3°C at night, with 7 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortFebruary

Typical high23.1°C

Typical low6.3°C

Rain in February7 mm

Comfort

February

February · March · November

82climate match

Beach

April

April · October · June

70climate match

Outdoors

December

December · January · February

90climate match

The weakest month is August, scoring 22 against February’s 82 — days average 42.5°C, 19° 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

7321.1° / 5.1°

Feb

8223.1° / 6.3°

Mar

8026.5° / 8.7°

Apr

7429.8° / 11°

May

6335° / 15.1°

Jun

4239° / 19.5°

Jul

2642° / 23.2°

Aug

2242.5° / 24.5°

Sep

3540.2° / 21.3°

Oct

6534.6° / 15.1°

Nov

8026.8° / 8.9°

Dec

6820.1° / 4.4°

Monthly climate evidence for San Luis Río Colorado — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	21.1°C	5.1°C	10 mm	1.1	10 h 14	73	Good coverage
February	23.1°C	6.3°C	7 mm	1.2	10 h 59	82	Good coverage
March	26.5°C	8.7°C	6 mm	0.9	11 h 53	80	Good coverage
April	29.8°C	11°C	3 mm	0.7	12 h 56	74	Good coverage
May	35°C	15.1°C	1 mm	0.2	13 h 48	63	Good coverage
June	39°C	19.5°C	1 mm	0.2	14 h 16	42	Good coverage
July	42°C	23.2°C	4 mm	0.4	14 h 05	26	Good coverage
August	42.5°C	24.5°C	8 mm	0.7	13 h 20	22	Good coverage
September	40.2°C	21.3°C	7 mm	0.8	12 h 20	35	Good coverage
October	34.6°C	15.1°C	4 mm	0.4	11 h 19	65	Good coverage
November	26.8°C	8.9°C	3 mm	0.3	10 h 27	80	Good coverage
December	20.1°C	4.4°C	8 mm	0.9	10 h 02	68	Good coverage

Records at RANCHO WILLIAMS, 1982–2012
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	35.6°C6 Jan 2003	-5.0°C2 Jan 2011	33 mm20 Jan 2010	69 mm2010 · driest 0 mm in 1988	29
February	36.7°C26 Feb 1986	-5.0°C15 Feb 1990	16 mm14 Feb 2003	27 mm1998 · driest 0 mm in 1996	28
March	45.0°C26 Mar 1986	0.0°C14 Mar 1990	41 mm6 Mar 2001	47 mm2001 · driest 0 mm in 2003	29
April	46.7°C26 Apr 1992	1.7°C2 Apr 1982	19 mm2 Apr 1999	24 mm1999 · driest 0 mm in 1986	27
May	48.9°C4 May 1987	3.9°C2 May 2011	8 mm4 May 1992	9 mm1995 · driest 0 mm in 1982	29
June	50.0°C25 Jun 1994	10.0°C2 Jun 1983	16 mm5 Jun 1997	18 mm1997 · driest 0 mm in 1991	29
July	51.7°C27 Jul 1995	10.0°C12 Jul 2012	57 mm29 Jul 1999	57 mm1999 · driest 0 mm in 1995	29
August	50.0°C25 Aug 1985	13.9°C21 Aug 2009	65 mm2 Aug 2005	90 mm2005 · driest 0 mm in 1985	31
September	48.9°C8 Sep 2007	10.0°C12 Sep 1985	33 mm13 Sep 1997	55 mm1997 · driest 0 mm in 1982	31
October	45.6°C8 Oct 1996	1.7°C29 Oct 1991	26 mm22 Oct 2000	31 mm2000 · driest 0 mm in 1984	31
November	41.7°C1 Nov 1999	-4.4°C20 Nov 1994	29 mm30 Nov 2007	29 mm2007 · driest 0 mm in 2000	30
December	30.6°C1 Dec 1990	-5.0°C23 Dec 1999	35 mm8 Dec 1982	64 mm1982 · driest 0 mm in 1995	30

Typical days per month at RANCHO WILLIAMS, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	6	2	2	<1
February	10	2	1	<1
March	18	10	0	<1
April	24	18	0	<1
May	29	27	0	0
June	29	28	0	0
July	31	31	0	0
August	31	31	0	<1
September	30	30	0	<1
October	29	25	0	<1
November	19	9	<1	<1
December	3	0	5	<1

How often, not how much — every day in RANCHO WILLIAMS’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	68%	4%	<1%	2%	19.1–23.4°C
February	83%	4%	<1%	1%	20.7–25.4°C
March	93%	3%	<1%	0%	23.2–30.0°C
April	97%	2%	<1%	0%	25.9–33.8°C
May	100%	<1%	0%	0%	33.2–38.4°C
June	100%	<1%	<1%	0%	35.7–42.3°C
July	98%	2%	<1%	0%	40.7–43.8°C
August	98%	2%	<1%	0%	40.5–44.2°C
September	98%	3%	<1%	<1%	37.5–42.0°C
October	98%	2%	<1%	0%	30.9–38.0°C
November	92%	2%	<1%	0%	23.7–31.0°C
December	63%	4%	1%	2%	18.2–22.2°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.

1982Each stripe is one year’s mean temperature against the 20-year average. Warmest: 1996. Coolest: 1982.2010

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 3985604
NOAA station: MXN00002145 · RANCHO WILLIAMS
Station distance: 20.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 16 usable years
Daylight: Calculated from latitude 32.46°, 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 RANCHO WILLIAMS is what differs

San Luis→Ejido Hermosillo→Ejido Tabasco→Ejido Mezquital→Gadsden→Poblado Janitzio→

Or put two places side by side: San Luis Río Colorado vs San Luis

Best time to visitSan Luis Río Colorado.