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Sun City West, Arizona climate

BWh Hot desert

Sun City West has a seasonal warm-temperate climate (Hot desert, Köppen BWh). The hottest month is July with an average daily high near 41°C, while the coldest is December averaging around 5°C at night. Precipitation totals about 212 mm a year and is strongly seasonal — February alone averages 32 mm while June barely receives 1 mm.

☀️ Summers

Very hot

Highs near 41°C in July.

About 171 days a year above 32 °C

❄️ Winters

Cool

Lows near 5°C in December.

About 4 freezing nights a year

🌧️ Rain

Very dry

About 212 mm of rain a year.

Wettest in February

⛅ Sky & trend

Fairly sunny

More sun than cloud through the year.

−0.0 °C vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Sun City West climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	19	21	25	29	34	39	41	40	37	31	23	18
Avg temp (°C)	12	14	17	21	26	31	34	33	30	23	16	11
Avg low (°C)	5	7	9	13	18	22	27	26	23	15	9	5
Precipitation (mm)	25	32	26	7	3	1	21	25	19	15	15	23

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	19	21	25	29	34	39
Avg temp (°C)	12	14	17	21	26	31
Avg low (°C)	5	7	9	13	18	22
Precipitation (mm)	25	32	26	7	3	1

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	41	40	37	31	23	18
Avg temp (°C)	34	33	30	23	16	11
Avg low (°C)	27	26	23	15	9	5
Precipitation (mm)	21	25	19	15	15	23

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	3	4	3	1	0.9	0.4	3	4	2	2	2	4
Days with high ≥ 32°C (days)	—	—	2	10	23	29	30	30	29	16	1	—
Days with low ≤ 0°C (days)	1.0	0.7	—	—	—	—	—	0.0	—	—	0.2	2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	3	4	3	1	0.9	0.4
Days with high ≥ 32°C (days)	—	—	2	10	23	29
Days with low ≤ 0°C (days)	1.0	0.7	—	—	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	3	4	2	2	2	4
Days with high ≥ 32°C (days)	30	30	29	16	1	—
Days with low ≤ 0°C (days)	—	0.0	—	—	0.2	2

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	42	44	38	31	26	20	43	42	28	27	33	42
Clear days (≤ 30% cloud)	14	12	15	17	21	23	12	13	19	20	17	13
Partly cloudy days (30–70%)	10	8	9	9	8	5	12	12	7	7	9	10
Cloudy days (≥ 70%)	8	8	7	4	3	2	7	6	3	4	5	8
Relative humidity (%)	45	43	38	29	22	16	28	33	30	29	34	43
Wind speed (mph)	4.6	4.5	4.7	5.4	5.5	5.5	5.1	4.3	4.4	4.6	4.7	4.5

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	42	44	38	31	26	20
Clear days (≤ 30% cloud)	14	12	15	17	21	23
Partly cloudy days (30–70%)	10	8	9	9	8	5
Cloudy days (≥ 70%)	8	8	7	4	3	2
Relative humidity (%)	45	43	38	29	22	16
Wind speed (mph)	4.6	4.5	4.7	5.4	5.5	5.5

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	43	42	28	27	33	42
Clear days (≤ 30% cloud)	12	13	19	20	17	13
Partly cloudy days (30–70%)	12	12	7	7	9	10
Cloudy days (≥ 70%)	7	6	3	4	5	8
Relative humidity (%)	28	33	30	29	34	43
Wind speed (mph)	5.1	4.3	4.4	4.6	4.7	4.5

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Youngtown (NOAA GHCN station USC00029634), about 8 km from the city centre.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →