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

Weather in Dayton, Iowa

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

Dayton, IA
Sunday, May 17 at 4:56 AM
66
°
Overcast
Feels like
65°
Humidity
79%
Wind
12 mph
Sunrise
5:53 AM
Sunset
8:31 PM
Dayton, IA
Hour by hour · 24h
68°
11p
65°
12a
64°
1a
62°
2a
61°
3a
59°
4a
56°
5a
54°
6a
57°
7a
62°
8a
69°
9a
73°
10a
78°
11a
81°
12p
84°
1p
86°
2p
88°
3p
89°
4p
89°
5p
88°
6p
88°
7p
82°
10%
8p
74°
33%
9p
74°
41%
10p
L 54°H 89°
Dayton, IA
7-day forecast
  1. Today
    May 16
    Light Drizzle
    66%
    80°57°
  2. Sunday
    May 17
    Thunderstorm
    59%
    78°62°
  3. Monday
    May 18
    Thunderstorm
    99%
    78°61°
  4. Tuesday
    May 19
    Overcast
    99%
    61°46°
  5. Wednesday
    May 20
    Overcast
    60°41°
  6. Thursday
    May 21
    Overcast
    65°45°
  7. Friday
    May 22
    Heavy Drizzle
    12%
    60°53°
Dayton, IA
Anemometer · 24h winds · from true
NESW
From · True
ENE
075° · backing 15°
Direction
ENE
075°
Sustained
12
mph
Gust
22
mph
Peak 24h
30
avg 10
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 10 · pk 30 @ 4:00a
−24h−18h−12h−6hnow
Light breeze backing 15° from the ene.
Dayton, IA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
966.0
-1.6 mb in 3h · falling · 28.53 inHg
Now
966.0
mb
3h
-1.6
mb
12h
-2.7
mb
24h
-0.1
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 966970
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Dayton, IA
Air quality
48
AQI
Good
PM 2.5
4.9 μg/m³
PM 10
5.7 μg/m³
NO₂
5.9 μg/m³
Ozone
70.0 μg/m³
UV Index
0.0 Low
Dayton, IA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:23 AM
Sunrise
5:53 AM
Daylight
14h 38m
Sunset
8:31 PM
Civil dusk
2:04 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Dayton, IA
The moon
New Moon
0% illuminated
Moonrise
10:56 AM
Moonset
2:05 AM
In sign
♊︎ Gemini
Dayton, 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 →

Dayton at a glance

  • Today vs. normal: 3°F below the seasonal normal for this latitude
  • Last frost: April 30 (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 Dayton

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.