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

Weather in Irwin, Iowa

Roses Bloom Along the Shelter Rows. Day 59 of spring. Read this microseason across nine climate regions →

Irwin, IA
Sunday, May 17 at 1:02 AM
72
°
Overcast
Feels like
71°
Humidity
85%
Wind
18 mph
Sunrise
5:59 AM
Sunset
8:34 PM
Irwin, IA
Hour by hour · 24h
74°
8p
72°
9p
70°
10p
68°
11p
66°
12a
64°
1a
62°
2a
61°
3a
60°
4a
57°
5a
55°
6a
55°
7a
64°
8a
71°
9a
76°
10a
78°
11a
83°
12p
85°
1p
87°
2p
89°
3p
88°
4p
91°
14%
5p
89°
12%
6p
84°
13%
7p
L 55°H 91°
Irwin, IA
7-day forecast
  1. Today
    May 16
    Showers
    62%
    82°57°
  2. Sunday
    May 17
    Thunderstorm
    76%
    79°60°
  3. Monday
    May 18
    Thunderstorm
    97%
    81°59°
  4. Tuesday
    May 19
    Overcast
    97%
    59°46°
  5. Wednesday
    May 20
    Overcast
    60°41°
  6. Thursday
    May 21
    Light Drizzle
    64°46°
  7. Friday
    May 22
    Drizzle
    13%
    63°54°
Irwin, IA
Anemometer · 24h winds · from true
NESW
From · True
SE
135° · veering 87°
Direction
SE
135°
Sustained
18
mph
Gust
25
mph
Peak 24h
46
avg 13
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 13 · pk 46 @ 12:00a
−24h−18h−12h−6hnow
A fresh breeze drives the se-bound air across the harbor.
Irwin, IA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
961.9
+1.0 mb in 3h · rising · 28.40 inHg
Now
961.9
mb
3h
+1.0
mb
12h
-2.0
mb
24h
+1.3
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 960964
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Irwin, IA
Air quality
61
AQI
Moderate
PM 2.5
3.5 μg/m³
PM 10
4.2 μg/m³
NO₂
1.9 μg/m³
Ozone
96.0 μg/m³
UV Index
0.1 Low
Irwin, IA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:29 AM
Sunrise
5:59 AM
Daylight
14h 35m
Sunset
8:34 PM
Civil dusk
2:07 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Irwin, IA
The moon
New Moon
0% illuminated
Moonrise
11:03 AM
Moonset
2:08 AM
In sign
♉︎ Taurus
Irwin, IA
Microseason · 28 of 72
May 16–20

Roses Bloom Along the Shelter Rows

plant
Jan 137% of the yearDec 31

Read this microseason across nine climate regions →

Irwin at a glance

  • Today vs. normal: 72°F — typical for the season
  • Last frost: April 27 (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

Warm-season window is open

As of May 17, the last spring frost has passed for most years. Transplant tomatoes, peppers, eggplants, basil, and cucurbits (cucumbers, squash, melons) now. Direct-sow beans and corn into warm soil.

ZIP codes in Irwin

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.