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

Weather in Unionville, Iowa

Roses open on the Piedmont edge. Day 59 of spring. Read this microseason across nine climate regions →

Unionville, IA
Sunday, May 17 at 1:05 AM
69
°
Light Rain
Feels like
71°
Humidity
89%
Wind
9 mph
Sunrise
5:52 AM
Sunset
8:22 PM
Unionville, IA
Hour by hour · 24h
70°
8p
68°
9p
67°
10p
66°
11p
64°
14%
12a
67°
20%
1a
65°
21%
2a
65°
3a
62°
4a
60°
5a
59°
6a
60°
7a
64°
8a
69°
9a
72°
10a
75°
11a
78°
12p
81°
1p
83°
2p
84°
3p
85°
4p
84°
5p
85°
6p
85°
7p
L 59°H 85°
Unionville, IA
7-day forecast
  1. Today
    May 16
    Heavy Rain
    63%
    85°63°
  2. Sunday
    May 17
    Heavy Rain
    61%
    84°62°
  3. Monday
    May 18
    Thunderstorm
    65%
    82°63°
  4. Tuesday
    May 19
    Showers
    72%
    64°48°
  5. Wednesday
    May 20
    Overcast
    60°41°
  6. Thursday
    May 21
    Overcast
    63°47°
  7. Friday
    May 22
    Overcast
    10%
    65°53°
Unionville, IA
Anemometer · 24h winds · from true
NESW
From · True
E
086° · backing 121°
Direction
E
086°
Sustained
9
mph
Gust
14
mph
Peak 24h
30
avg 9
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 9 · pk 30 @ 10:00p
−24h−18h−12h−6hnow
Light breeze backing 121° from the e.
Unionville, IA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
975.0
-2.1 mb in 3h · rising · 28.79 inHg
Now
975.0
mb
3h
-2.1
mb
12h
-1.2
mb
24h
+1.6
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 973978
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Unionville, IA
Air quality
47
AQI
Good
PM 2.5
4.8 μg/m³
PM 10
5.6 μg/m³
NO₂
2.6 μg/m³
Ozone
83.0 μg/m³
UV Index
0.0 Low
Unionville, IA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:22 AM
Sunrise
5:52 AM
Daylight
14h 30m
Sunset
8:22 PM
Civil dusk
1:54 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Unionville, IA
The moon
New Moon
0% illuminated
Moonrise
10:56 AM
Moonset
1:54 AM
In sign
♉︎ Taurus
Unionville, IA
Microseason · 28 of 72
May 16–20

Roses open on the Piedmont edge

insect
Jan 137% of the yearDec 31

Read this microseason across nine climate regions →

Unionville at a glance

  • Today vs. normal: 69°F — typical for the season
  • Last frost: April 21 (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 Unionville

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.