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Weather in Mount Vernon, Iowa

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

Mount Vernon, IA
Sunday, May 17 at 2:12 AM
75
°
Overcast
Feels like
78°
Humidity
73%
Wind
5 mph
Sunrise
5:44 AM
Sunset
8:20 PM
Mount Vernon, IA
Hour by hour · 24h
69°
9p
69°
10p
68°
11p
65°
12a
65°
1a
63°
2a
63°
3a
63°
4a
61°
5a
59°
6a
58°
7a
61°
8a
64°
9a
68°
10a
72°
11a
75°
12p
78°
1p
80°
2p
82°
3p
83°
4p
84°
5p
82°
6p
81°
7p
78°
8p
L 58°H 84°
Mount Vernon, IA
7-day forecast
  1. Today
    May 16
    Light Rain
    63%
    83°63°
  2. Sunday
    May 17
    Thunderstorm
    50%
    81°64°
  3. Monday
    May 18
    Thunderstorm
    74%
    84°68°
  4. Tuesday
    May 19
    Showers
    75%
    72°50°
  5. Wednesday
    May 20
    Overcast
    60°42°
  6. Thursday
    May 21
    Overcast
    65°43°
  7. Friday
    May 22
    Overcast
    65°50°
Mount Vernon, IA
Anemometer · 24h winds · from true
NESW
From · True
ESE
109° · backing 166°
Direction
ESE
109°
Sustained
5
mph
Gust
9
mph
Peak 24h
42
avg 9
Beaufort · 2 · LIGHT 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 42 @ 1:00a
−24h−18h−12h−6hnow
Light breeze backing 166° from the ese.
Mount Vernon, IA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
978.6
-2.0 mb in 3h · falling · 28.90 inHg
Now
978.6
mb
3h
-2.0
mb
12h
-1.8
mb
24h
+1.9
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 977981
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Mount Vernon, IA
Air quality
64
AQI
Moderate
PM 2.5
3.8 μg/m³
PM 10
4.7 μg/m³
NO₂
4.2 μg/m³
Ozone
91.0 μg/m³
UV Index
0.0 Low
Mount Vernon, IA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:13 AM
Sunrise
5:44 AM
Daylight
14h 36m
Sunset
8:20 PM
Civil dusk
1:53 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Mount Vernon, IA
The moon
New Moon
0% illuminated
Moonrise
10:48 AM
Moonset
1:53 AM
In sign
♉︎ Taurus
Mount Vernon, 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 →

Mount Vernon at a glance

  • Today vs. normal: 5°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 Mount Vernon

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.