United States · 1991–2020

Best time to visit
Green Valley.

March leads for comfortable weather in Green Valley: typically 24.5°C by day, 7.4°C at night, with 16 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortMarch

Typical high24.5°C

Typical low7.4°C

Rain in March16 mm

Comfort

March

March · November · April

84climate match

Beach

September

September · October · June

76climate match

Outdoors

February

February · January · December

87climate match

The weakest month is July, scoring 31 against March’s 84 — days average 37.1°C, 13° 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

6419.7° / 2.8°

Feb

7020.9° / 4.2°

Mar

8424.5° / 7.4°

Apr

7928.2° / 10.7°

May

7132.9° / 15°

Jun

4437.9° / 20.5°

Jul

3137.1° / 23.2°

Aug

3836.3° / 22.2°

Sep

5434.9° / 19.6°

Oct

7630.3° / 13°

Nov

8424.4° / 7°

Dec

6219.2° / 2.7°

Monthly climate evidence for Green Valley — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	19.7°C	2.8°C	20 mm	3.3	10 h 16	64	Good coverage
February	20.9°C	4.2°C	23 mm	3.4	11 h 00	70	Good coverage
March	24.5°C	7.4°C	16 mm	2.6	11 h 53	84	Good coverage
April	28.2°C	10.7°C	6 mm	1	12 h 55	79	Good coverage
May	32.9°C	15°C	5 mm	1	13 h 46	71	Good coverage
June	37.9°C	20.5°C	9 mm	1.1	14 h 13	44	Good coverage
July	37.1°C	23.2°C	78 mm	8.1	14 h 02	31	Good coverage
August	36.3°C	22.2°C	67 mm	7.7	13 h 19	38	Good coverage
September	34.9°C	19.6°C	42 mm	3.8	12 h 19	54	Good coverage
October	30.3°C	13°C	23 mm	2.8	11 h 20	76	Good coverage
November	24.4°C	7°C	15 mm	1.9	10 h 29	84	Good coverage
December	19.2°C	2.7°C	25 mm	3.5	10 h 05	62	Good coverage

Records at GREEN VALLEY, 1998–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	31.1°C25 Jan 1999	-8.3°C15 Jan 2013	32 mm30 Jan 2015	54 mm2010 · driest 0 mm in 2006	28
February	32.2°C24 Feb 2009	-8.9°C3 Feb 2011	30 mm22 Feb 2019	71 mm2019 · driest 0 mm in 2021	27
March	38.3°C22 Mar 2026	-3.9°C3 Mar 2002	32 mm1 Mar 2014	34 mm2000 · driest 0 mm in 2002	28
April	37.8°C28 Apr 2000	-0.6°C5 Apr 1999	38 mm2 Apr 1999	43 mm1999 · driest 0 mm in 2013	28
May	42.2°C30 May 2000	6.7°C1 May 1999	15 mm22 May 2009	18 mm2005 · driest 0 mm in 1999	29
June	44.4°C22 Jun 2017	11.1°C5 Jun 1999	41 mm28 Jun 1999	41 mm1999 · driest 0 mm in 2023	29
July	43.9°C19 Jul 2023	15.6°C9 Jul 2008	112 mm24 Jul 2021	302 mm2021 · driest 16 mm in 2019	28
August	43.3°C7 Aug 2025	15.6°C16 Aug 2007	50 mm9 Aug 2016	122 mm2005 · driest 10 mm in 2020	28
September	42.8°C5 Sep 2020	10.0°C22 Sep 2004	88 mm19 Sep 2018	156 mm2018 · driest 0 mm in 2017	27
October	39.4°C5 Oct 2024	-0.6°C27 Oct 2020	45 mm12 Oct 2000	184 mm2000 · driest 0 mm in 2019	28
November	33.9°C4 Nov 2020	-5.6°C30 Nov 2010	41 mm23 Nov 2013	78 mm2019 · driest 0 mm in 2018	27
December	30.0°C23 Dec 2025	-6.1°C29 Dec 2003	47 mm22 Dec 2023	62 mm2011 · driest 0 mm in 2024	27

Typical days per month at GREEN VALLEY, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	4	<1	7	<1
February	7	<1	4	<1
March	17	4	<1	<1
April	23	12	0	<1
May	29	24	0	<1
June	29	28	0	<1
July	29	28	0	3
August	30	29	0	2
September	29	27	0	1
October	27	18	0	<1
November	15	5	2	<1
December	3	0	9	<1

How often, not how much — every day in GREEN VALLEY’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	50%	11%	2%	10%	17.5–22.2°C
February	58%	12%	2%	9%	18.0–23.9°C
March	80%	8%	2%	5%	22.1–26.6°C
April	93%	3%	<1%	<1%	26.9–30.3°C
May	98%	3%	<1%	2%	30.8–34.6°C
June	96%	4%	<1%	4%	36.6–38.9°C
July	72%	28%	9%	31%	35.4–39.6°C
August	76%	26%	8%	28%	34.8–38.4°C
September	88%	13%	4%	6%	33.5–36.4°C
October	92%	9%	2%	5%	28.5–32.9°C
November	79%	6%	2%	5%	21.7–27.2°C
December	50%	11%	2%	9%	17.8–21.8°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.

1999Each stripe is one year’s mean temperature against the 23-year average. Warmest: 2017. Coolest: 2019.2025

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 5296802
NOAA station: USC00023668 · GREEN VALLEY
Station distance: 4.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 21 usable years
Daylight: Calculated from latitude 31.85°, 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 GREEN VALLEY is what differs

Sahuarita→Corona de Tucson→East Sahuarita→Continental→Duval→Sahuarita Heights→

Or put two places side by side: Green Valley vs Sahuarita

Best time to visitGreen Valley.