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

Weather in Chelsea, Iowa

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

Chelsea, IA
Sunday, May 17 at 12:48 AM
77
°
Thunderstorm
Feels like
79°
Humidity
64%
Wind
8 mph
Sunrise
5:47 AM
Sunset
8:24 PM
Chelsea, IA
Hour by hour · 24h
71°
7p
68°
8p
67°
9p
68°
10p
65°
11p
64°
12a
62°
1a
60°
2a
59°
3a
59°
4a
57°
5a
56°
6a
58°
7a
61°
8a
66°
9a
70°
10a
73°
11a
76°
12p
80°
1p
82°
2p
84°
3p
85°
4p
85°
5p
82°
6p
L 56°H 85°
Chelsea, IA
7-day forecast
  1. Today
    May 16
    Thunderstorm
    71%
    83°61°
  2. Sunday
    May 17
    Rain
    50%
    82°62°
  3. Monday
    May 18
    Thunderstorm
    82%
    82°63°
  4. Tuesday
    May 19
    Showers
    81%
    66°49°
  5. Wednesday
    May 20
    Overcast
    61°42°
  6. Thursday
    May 21
    Overcast
    64°44°
  7. Friday
    May 22
    Overcast
    66°53°
Chelsea, IA
Anemometer · 24h winds · from true
NESW
From · True
S
171° · veering 134°
Direction
S
171°
Sustained
8
mph
Gust
16
mph
Peak 24h
32
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 32 @ 10:00p
−24h−18h−12h−6hnow
Light breeze veering 134° from the s.
Chelsea, IA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
980.3
-0.7 mb in 3h · rising · 28.95 inHg
Now
980.3
mb
3h
-0.7
mb
12h
-2.7
mb
24h
+1.3
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 979983
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Chelsea, IA
Air quality
65
AQI
Moderate
PM 2.5
3.4 μg/m³
PM 10
4.5 μg/m³
NO₂
2.7 μg/m³
Ozone
96.0 μg/m³
UV Index
0.2 Low
Chelsea, IA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:17 AM
Sunrise
5:47 AM
Daylight
14h 37m
Sunset
8:24 PM
Civil dusk
1:56 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Chelsea, IA
The moon
New Moon
0% illuminated
Moonrise
10:51 AM
Moonset
1:57 AM
In sign
♉︎ Taurus
Chelsea, 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 →

Chelsea 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

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 Chelsea

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.