United States · 1991–2020

Best time to visit
Rio Rico Southwest.

March leads for comfortable weather in Rio Rico Southwest: typically 22.9°C by day, 1.9°C at night, with 17 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMarch

Typical high22.9°C

Typical low1.9°C

Rain in March17 mm

Comfort

March

March · April · November

73climate match

Beach

September

September · October · August

67climate match

Outdoors

February

February · March · November

81climate match

The weakest month is July, scoring 43 against March’s 73 — days average 34.8°C, 11° 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

5218.8° / -2°

Feb

5719.8° / -0.7°

Mar

7322.9° / 1.9°

Apr

7226.5° / 4.2°

May

6530.9° / 8°

Jun

5835.9° / 13.3°

Jul

4334.8° / 18.5°

Aug

4733.8° / 18°

Sep

6832.7° / 14.4°

Oct

7028.8° / 7.1°

Nov

7223.1° / 1.3°

Dec

4918.2° / -2°

Monthly climate evidence for Rio Rico Southwest — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	18.8°C	-2°C	26 mm	3.4	10 h 18	52	Strong coverage
February	19.8°C	-0.7°C	23 mm	3.5	11 h 01	57	Strong coverage
March	22.9°C	1.9°C	17 mm	2.5	11 h 54	73	Strong coverage
April	26.5°C	4.2°C	9 mm	1.1	12 h 54	72	Strong coverage
May	30.9°C	8°C	4 mm	1	13 h 44	65	Strong coverage
June	35.9°C	13.3°C	16 mm	1.6	14 h 11	58	Strong coverage
July	34.8°C	18.5°C	92 mm	10.6	14 h 00	43	Strong coverage
August	33.8°C	18°C	96 mm	9.9	13 h 18	47	Strong coverage
September	32.7°C	14.4°C	42 mm	4.7	12 h 19	68	Strong coverage
October	28.8°C	7.1°C	19 mm	2.1	11 h 21	70	Strong coverage
November	23.1°C	1.3°C	16 mm	2.3	10 h 31	72	Strong coverage
December	18.2°C	-2°C	30 mm	3.9	10 h 07	49	Strong coverage

What has changed

Rio Rico Southwest runs +1.3°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

+1.3

Feb

+0.9

Mar

+1.9

Apr

+1.7

May

+0.9

Jun

+1.6

Jul

+0.7

Aug

+1.4

Sep

+0.8

Oct

+1.6

Nov

+1.6

Dec

+1.0

March daytime highs, 2011–2025. Last recorded: 23.6°C.

Records at NOGALES 6 N, 1952–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	29.4°C16 Jan 2000	-13.3°C7 Jan 1971	50 mm22 Jan 2010	151 mm1993 · driest 0 mm in 2000	71
February	31.7°C9 Feb 2017	-12.8°C15 Feb 1964	38 mm11 Feb 1978	78 mm1973 · driest 0 mm in 1974	73
March	37.8°C21 Mar 2026	-10.6°C10 Mar 1974	45 mm4 Mar 1983	87 mm1958 · driest 0 mm in 1971	74
April	37.2°C20 Apr 1989	-13.9°C7 Apr 1975	37 mm6 Apr 2001	72 mm1988 · driest 0 mm in 1970	74
May	41.7°C31 May 2001	-3.9°C8 May 1975	21 mm27 May 1993	51 mm1979 · driest 0 mm in 2007	74
June	44.4°C26 Jun 1990	1.1°C7 Jun 1967	38 mm21 Jun 1994	144 mm2000 · driest 0 mm in 2010	74
July	42.8°C28 Jul 1995	6.7°C23 Jul 1973	71 mm27 Jul 1967	260 mm1984 · driest 10 mm in 1980	74
August	42.2°C7 Aug 2025	4.4°C27 Aug 1954	93 mm25 Aug 1993	323 mm1993 · driest 17 mm in 1973	71
September	40.6°C10 Sep 2023	-1.1°C30 Sep 1965	55 mm13 Sep 1966	174 mm1983 · driest 0 mm in 1973	71
October	38.3°C1 Oct 1974	-7.2°C30 Oct 1971	95 mm9 Oct 1977	224 mm2000 · driest 0 mm in 1962	73
November	33.9°C21 Nov 1966	-13.3°C17 Nov 1958	70 mm12 Nov 1994	98 mm1994 · driest 0 mm in 1954	73
December	28.9°C22 Dec 2025	-20.0°C8 Dec 1978	65 mm6 Dec 1994	207 mm1965 · driest 0 mm in 1973	72

Typical days per month at NOGALES 6 N, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	2	0	23	<1
February	4	<1	17	<1
March	12	1	9	<1
April	21	7	4	<1
May	28	20	<1	0
June	29	29	0	<1
July	30	28	0	3
August	30	28	0	3
September	29	25	0	1
October	25	14	1	<1
November	12	2	12	<1
December	2	0	22	<1

The best month has moved. On the 1961–1990 numbers the strongest month here was April (scoring 74); on 2011–2025 it is November (75). Both are scored the same way, from the same station — only the climate underneath changed.

How often, not how much — every day in NOGALES 6 N’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	39%	12%	3%	10%	15.8–20.8°C
February	49%	11%	2%	9%	16.8–22.5°C
March	67%	9%	2%	5%	19.3–24.9°C
April	89%	4%	<1%	1%	23.7–28.0°C
May	96%	3%	<1%	2%	28.2–32.5°C
June	94%	6%	1%	7%	33.4–37.6°C
July	63%	37%	12%	53%	32.5–36.3°C
August	68%	32%	10%	38%	31.3–35.2°C
September	85%	15%	5%	12%	30.7–34.4°C
October	90%	8%	3%	6%	26.0–30.6°C
November	71%	8%	2%	4%	19.8–25.0°C
December	42%	13%	3%	11%	16.1–20.8°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.

1953Each stripe is one year’s mean temperature against the 63-year average. Warmest: 2025. Coolest: 1964.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 7262229
NOAA station: USC00025924 · NOGALES 6 N
Station distance: 5.4 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 28 usable years
Daylight: Calculated from latitude 31.44°, 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 NOGALES 6 N is what differs

Rio Rico→Calabasas→Rio Rico Southeast→

Or put two places side by side: Rio Rico Southwest vs Rio Rico

Best time to visitRio Rico Southwest.

March

September

February

The whole year,without the guesswork.

Rio Rico Southwest runs +1.3°Con the 1961–1990 baseline.

Nearby, measured,and named.

Best time to visit
Rio Rico Southwest.

The whole year,
without the guesswork.

Rio Rico Southwest runs +1.3°C
on the 1961–1990 baseline.

Nearby, measured,
and named.