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

Weather in Marshalltown, Iowa

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

Marshalltown, IA
Sunday, May 17 at 12:53 AM
77
°
Overcast
Feels like
79°
Humidity
64%
Wind
8 mph
Sunrise
5:49 AM
Sunset
8:26 PM
Marshalltown, IA
Hour by hour · 24h
74°
7p
72°
8p
71°
9p
70°
10p
68°
11p
66°
12a
64°
1a
63°
2a
61°
3a
60°
4a
56°
5a
56°
6a
58°
7a
63°
8a
67°
9a
71°
10a
75°
11a
78°
12p
82°
1p
85°
2p
86°
3p
87°
4p
87°
5p
85°
6p
L 56°H 87°
Marshalltown, IA
7-day forecast
  1. Today
    May 16
    Rain
    75%
    81°59°
  2. Sunday
    May 17
    Thunderstorm
    56%
    79°61°
  3. Monday
    May 18
    Thunderstorm
    87%
    83°62°
  4. Tuesday
    May 19
    Light Showers
    87%
    64°47°
  5. Wednesday
    May 20
    Overcast
    60°41°
  6. Thursday
    May 21
    Overcast
    65°44°
  7. Friday
    May 22
    Light Drizzle
    10%
    67°53°
Marshalltown, IA
Anemometer · 24h winds · from true
NESW
From · True
SE
124° · veering 50°
Direction
SE
124°
Sustained
8
mph
Gust
18
mph
Peak 24h
33
avg 6
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 6 · pk 33 @ 9:00p
−24h−18h−12h−6hnow
Light breeze veering 50° from the se.
Marshalltown, IA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
975.4
-0.4 mb in 3h · steady · 28.80 inHg
Now
975.4
mb
3h
-0.4
mb
12h
-2.6
mb
24h
+1.9
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 974978
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Marshalltown, IA
Air quality
64
AQI
Moderate
PM 2.5
3.7 μg/m³
PM 10
4.8 μg/m³
NO₂
2.5 μg/m³
Ozone
98.0 μg/m³
UV Index
0.2 Low
Marshalltown, IA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:19 AM
Sunrise
5:49 AM
Daylight
14h 37m
Sunset
8:26 PM
Civil dusk
1:59 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Marshalltown, IA
The moon
New Moon
0% illuminated
Moonrise
10:53 AM
Moonset
2:00 AM
In sign
♉︎ Taurus
Marshalltown, 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 →

Marshalltown at a glance

  • Today vs. normal: 7°F above the seasonal normal for this latitude
  • Last frost: April 28 (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

Cool-season window is open

As of May 17, the cool-season window is open or about to open. Direct-sow peas, lettuce, spinach, radishes, and brassicas now. Hold off on warm-season crops until 1–2 weeks after the last spring frost (around May).

ZIP codes in Marshalltown

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.