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

Weather in Grand River, Iowa

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

Grand River, IA
Sunday, May 17 at 12:51 AM
70
°
Light Drizzle
Feels like
74°
Humidity
94%
Wind
7 mph
Sunrise
5:57 AM
Sunset
8:27 PM
Grand River, IA
Hour by hour · 24h
75°
7p
72°
8p
70°
9p
69°
10p
68°
11p
67°
12a
66°
1a
64°
2a
63°
3a
62°
4a
60°
5a
59°
6a
60°
7a
65°
8a
69°
9a
73°
10a
77°
11a
80°
12p
83°
1p
84°
2p
86°
3p
86°
4p
88°
5p
88°
6p
L 59°H 88°
Grand River, IA
7-day forecast
  1. Today
    May 16
    Heavy Rain
    79%
    84°64°
  2. Sunday
    May 17
    Thunderstorm
    78%
    82°62°
  3. Monday
    May 18
    Thunderstorm
    82%
    81°61°
  4. Tuesday
    May 19
    Showers
    85%
    64°48°
  5. Wednesday
    May 20
    Overcast
    60°41°
  6. Thursday
    May 21
    Overcast
    65°47°
  7. Friday
    May 22
    Overcast
    14%
    65°55°
Grand River, IA
Anemometer · 24h winds · from true
NESW
From · True
ESE
110° · backing 70°
Direction
ESE
110°
Sustained
7
mph
Gust
19
mph
Peak 24h
39
avg 10
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 10 · pk 39 @ 12:00a
−24h−18h−12h−6hnow
Light breeze backing 70° from the ese.
Grand River, IA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
970.3
-0.4 mb in 3h · rising rapidly · 28.65 inHg
Now
970.3
mb
3h
-0.4
mb
12h
-2.5
mb
24h
+1.2
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 969973
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Grand River, IA
Air quality
47
AQI
Good
PM 2.5
5.7 μg/m³
PM 10
7.0 μg/m³
NO₂
1.7 μg/m³
Ozone
88.0 μg/m³
UV Index
0.1 Low
Grand River, IA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:27 AM
Sunrise
5:57 AM
Daylight
14h 30m
Sunset
8:27 PM
Civil dusk
1:59 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Grand River, IA
The moon
New Moon
0% illuminated
Moonrise
11:02 AM
Moonset
1:59 AM
In sign
♉︎ Taurus
Grand River, 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 →

Grand River at a glance

  • Today vs. normal: 70°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 Grand River

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.