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Weather in Ottumwa, Iowa

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

Ottumwa, IA
Sunday, May 17 at 3:49 AM
65
°
Heavy Rain
Feels like
67°
Humidity
88%
Wind
3 mph
Sunrise
5:50 AM
Sunset
8:21 PM
Ottumwa, IA
Hour by hour · 24h
69°
10p
68°
11p
68°
12a
68°
18%
1a
67°
20%
2a
66°
3a
63°
4a
59°
5a
59°
6a
61°
7a
63°
8a
69°
9a
72°
10a
75°
11a
79°
12p
83°
1p
84°
2p
86°
3p
87°
4p
86°
5p
87°
6p
86°
7p
83°
8p
79°
9p
L 59°H 87°
Ottumwa, IA
7-day forecast
  1. Today
    May 16
    Thunderstorm
    85%
    83°63°
  2. Sunday
    May 17
    Thunderstorm
    65%
    82°63°
  3. Monday
    May 18
    Showers
    79%
    80°67°
  4. Tuesday
    May 19
    Showers
    84%
    66°49°
  5. Wednesday
    May 20
    Overcast
    61°42°
  6. Thursday
    May 21
    Overcast
    65°48°
  7. Friday
    May 22
    Overcast
    11%
    67°54°
Ottumwa, IA
Anemometer · 24h winds · from true
NESW
From · True
S
180° · veering 54°
Direction
S
180°
Sustained
3
mph
Gust
7
mph
Peak 24h
33
avg 8
Beaufort · 1 · LIGHT AIR
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 8 · pk 33 @ 12:00a
−24h−18h−12h−6hnow
Light breeze veering 54° from the s.
Ottumwa, IA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
988.8
+1.3 mb in 3h · falling · 29.20 inHg
Now
988.8
mb
3h
+1.3
mb
12h
+2.7
mb
24h
+3.5
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 985989
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Ottumwa, IA
Air quality
46
AQI
Good
PM 2.5
4.6 μg/m³
PM 10
5.1 μg/m³
NO₂
3.4 μg/m³
Ozone
80.0 μg/m³
UV Index
0.0 Low
Ottumwa, IA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:20 AM
Sunrise
5:50 AM
Daylight
14h 31m
Sunset
8:21 PM
Civil dusk
1:53 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Ottumwa, IA
The moon
New Moon
0% illuminated
Moonrise
10:55 AM
Moonset
1:53 AM
In sign
♊︎ Gemini
Ottumwa, 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 →

Ottumwa at a glance

  • Today vs. normal: 6°F below the seasonal normal for this latitude
  • Last frost: April 22 (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 Ottumwa

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.