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

Weather in Poston, Arizona

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

Poston, AZ
Saturday, May 16 at 11:42 PM
90
°
Clear
Feels like
83°
Humidity
20%
Wind
13 mph
Sunrise
5:35 AM
Sunset
7:32 PM
Poston, AZ
Hour by hour · 24h
94°
4p
93°
5p
92°
6p
89°
7p
87°
8p
84°
9p
82°
10p
80°
11p
76°
12a
73°
1a
71°
2a
70°
3a
68°
4a
67°
5a
64°
6a
68°
7a
75°
8a
80°
9a
84°
10a
88°
11a
92°
12p
94°
1p
95°
2p
96°
3p
L 64°H 96°
Poston, AZ
7-day forecast
  1. Today
    May 16
    Clear
    91°70°
  2. Sunday
    May 17
    Overcast
    89°62°
  3. Monday
    May 18
    Partly Cloudy
    87°58°
  4. Tuesday
    May 19
    Overcast
    92°64°
  5. Wednesday
    May 20
    Overcast
    98°65°
  6. Thursday
    May 21
    Overcast
    100°68°
  7. Friday
    May 22
    Clear
    101°69°
Poston, AZ
Anemometer · 24h winds · from true
NESW
From · True
SSW
197° · veering 7°
Direction
SSW
197°
Sustained
13
mph
Gust
17
mph
Peak 24h
23
avg 9
Beaufort · 4 · MOD 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 23 @ 9:00p
−24h−18h−12h−6hnow
A fresh breeze drives the ssw-bound air across the harbor.
Poston, AZ
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
990.1
+1.0 mb in 3h · steady · 29.24 inHg
Now
990.1
mb
3h
+1.0
mb
12h
-4.5
mb
24h
-4.0
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 989995
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Poston, AZ
Air quality
65
AQI
Moderate
PM 2.5
8.0 μg/m³
PM 10
31.7 μg/m³
NO₂
0.2 μg/m³
Ozone
129.0 μg/m³
UV Index
3.5 Moderate
Poston, AZ
Almanac · Saturday, May 16
Flowers blooming in late autumn, a sure sign of a bad winter coming.
Civil dawn
12:09 PM
Sunrise
5:35 AM
Daylight
13h 57m
Sunset
7:32 PM
Civil dusk
3:01 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Poston, AZ
The moon
New Moon
0% illuminated
Moonrise
12:03 PM
Moonset
1:48 AM
In sign
♉︎ Taurus
Poston, 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 →

Poston at a glance

  • Today vs. normal: 12°F above the seasonal normal for this latitude
  • Last frost: March 11 (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 Poston

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.