Weather StoryAlmanac, microseasons, and the day's weather story.

Weather in San Tan Valley, Arizona

Saguaro crowns open white. Day 58 of spring. Read this microseason across nine climate regions →

San Tan Valley, AZ
Saturday, May 16 at 11:43 PM
95
°
Clear
Feels like
87°
Humidity
8%
Wind
10 mph
Sunrise
5:25 AM
Sunset
7:19 PM
San Tan Valley, AZ
Hour by hour · 24h
98°
4p
98°
5p
96°
6p
92°
7p
88°
8p
85°
9p
83°
10p
79°
11p
77°
12a
76°
1a
72°
2a
70°
3a
67°
4a
64°
5a
64°
6a
71°
7a
78°
8a
81°
9a
85°
10a
88°
11a
90°
12p
92°
1p
93°
2p
92°
3p
L 64°H 98°
San Tan Valley, AZ
7-day forecast
  1. Today
    May 16
    Clear
    96°68°
  2. Sunday
    May 17
    Mostly Clear
    92°63°
  3. Monday
    May 18
    Overcast
    87°60°
  4. Tuesday
    May 19
    Overcast
    88°65°
  5. Wednesday
    May 20
    Overcast
    90°67°
  6. Thursday
    May 21
    Overcast
    93°69°
  7. Friday
    May 22
    Clear
    95°68°
San Tan Valley, AZ
Anemometer · 24h winds · from true
NESW
From · True
SW
218° · veering 9°
Direction
SW
218°
Sustained
10
mph
Gust
21
mph
Peak 24h
24
avg 9
Beaufort · 3 · GENTLE BRZ
0
CALM
<1
1
LIGHT AIR
1–3
2
LIGHT BRZ
4–7
3
GENTLE BRZ
8–12
4
MOD BRZ
13–18
5
FRESH BRZ
19–24
6
STRONG BRZ
25–31
7
NEAR GALE
32–38
24h · sust vs gust · mph
avg 9 · pk 24 @ 7:00p
−24h−18h−12h−6hnow
Light breeze veering 9° from the sw.
San Tan Valley, AZ
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
952.5
+0.1 mb in 3h · steady · 28.13 inHg
Now
952.5
mb
3h
+0.1
mb
12h
-4.5
mb
24h
-3.9
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 952958
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
San Tan Valley, AZ
Air quality
50
AQI
Good
PM 2.5
10.7 μg/m³
PM 10
94.8 μg/m³
NO₂
0.5 μg/m³
Ozone
120.0 μg/m³
UV Index
3.1 Moderate
San Tan Valley, AZ
Almanac · Saturday, May 16
Flowers blooming in late autumn, a sure sign of a bad winter coming.
Civil dawn
11:59 AM
Sunrise
5:25 AM
Daylight
13h 54m
Sunset
7:19 PM
Civil dusk
2:48 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
San Tan Valley, AZ
The moon
New Moon
0% illuminated
Moonrise
11:54 AM
Moonset
1:34 AM
In sign
♉︎ Taurus
San Tan Valley, AZ
Microseason · 28 of 72
May 16–20

Saguaro crowns open white

weather
Jan 137% of the yearDec 31

Read this microseason across nine climate regions →

San Tan Valley at a glance

  • Today vs. normal: 17°F above the seasonal normal for this latitude
  • Last frost: March 6 (climatological average for this latitude)
  • Microseason: 28 of 72, May 16–20
  • Planting window: Direct sow okra, melons, and southern peas. Thin carrot rows.

Right now in the garden

Peak growing season

As of May 16, the growing season is at its peak — frost is months away. Continue succession-planting beans and summer squash. Start fall brassicas (broccoli, cabbage, kale) from seed indoors for transplanting in late summer.

ZIP codes in San Tan Valley

Climate normals from the Open-Meteo Climate API. Köppen approximation from NOAA NCEI U.S. Climate Regions. See methodology for data sources, editorial rules, and corrections. Maintainer: Brian Tighe.