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Weather in Onawa, Iowa

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

Onawa, IA
Sunday, May 17 at 1:03 AM
78
°
Overcast
Feels like
69°
Humidity
25%
Wind
15 mph
Sunrise
6:02 AM
Sunset
8:39 PM
Onawa, IA
Hour by hour · 24h
80°
8p
76°
9p
73°
10p
71°
11p
69°
12a
67°
1a
63°
2a
61°
3a
59°
4a
56°
5a
55°
6a
57°
7a
64°
8a
70°
9a
76°
10a
81°
11a
84°
12p
88°
1p
91°
2p
93°
3p
94°
4p
93°
5p
93°
6p
88°
12%
7p
L 55°H 94°
Onawa, IA
7-day forecast
  1. Today
    May 16
    Overcast
    13%
    84°53°
  2. Sunday
    May 17
    Thunderstorm
    67%
    86°61°
  3. Monday
    May 18
    Light Showers
    92%
    65°54°
  4. Tuesday
    May 19
    Rain
    92%
    60°45°
  5. Wednesday
    May 20
    Overcast
    64°41°
  6. Thursday
    May 21
    Overcast
    67°48°
  7. Friday
    May 22
    Heavy Drizzle
    18%
    63°55°
Onawa, IA
Anemometer · 24h winds · from true
NESW
From · True
NE
052° · backing 9°
Direction
NE
052°
Sustained
15
mph
Gust
29
mph
Peak 24h
41
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 41 @ 12:00a
−24h−18h−12h−6hnow
Sustained 15 mph with gusts pulsing to 29 — flags snap, branches bend.
Onawa, IA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
969.7
+1.8 mb in 3h · rising · 28.64 inHg
Now
969.7
mb
3h
+1.8
mb
12h
-2.4
mb
24h
+1.2
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 967972
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Onawa, IA
Air quality
57
AQI
Moderate
PM 2.5
4.3 μg/m³
PM 10
5.5 μg/m³
NO₂
1.7 μg/m³
Ozone
109.0 μg/m³
UV Index
0.1 Low
Onawa, IA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:32 AM
Sunrise
6:02 AM
Daylight
14h 37m
Sunset
8:39 PM
Civil dusk
2:12 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Onawa, IA
The moon
New Moon
0% illuminated
Moonrise
11:06 AM
Moonset
2:12 AM
In sign
♉︎ Taurus
Onawa, 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 →

Onawa at a glance

  • Today vs. normal: 8°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 Onawa

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.