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Weather in Rock Valley, Iowa

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

Rock Valley, IA
Sunday, May 17 at 12:53 AM
74
°
Mostly Clear
Feels like
67°
Humidity
24%
Wind
9 mph
Sunrise
5:59 AM
Sunset
8:43 PM
Rock Valley, IA
Hour by hour · 24h
75°
7p
74°
8p
71°
9p
69°
10p
67°
11p
65°
12a
63°
1a
59°
2a
58°
3a
56°
4a
54°
5a
53°
6a
53°
7a
61°
8a
68°
9a
74°
10a
80°
11a
84°
12p
85°
1p
88°
2p
90°
3p
90°
4p
89°
5p
83°
6p
L 53°H 90°
Rock Valley, IA
7-day forecast
  1. Today
    May 16
    Overcast
    83°48°
  2. Sunday
    May 17
    Heavy Rain
    48%
    71°62°
  3. Monday
    May 18
    Rain
    83%
    64°49°
  4. Tuesday
    May 19
    Light Drizzle
    83%
    54°43°
  5. Wednesday
    May 20
    Overcast
    65°39°
  6. Thursday
    May 21
    Overcast
    68°47°
  7. Friday
    May 22
    Heavy Drizzle
    17%
    62°54°
Rock Valley, IA
Anemometer · 24h winds · from true
NESW
From · True
ENE
063° · backing 8°
Direction
ENE
063°
Sustained
9
mph
Gust
19
mph
Peak 24h
20
avg 7
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 7 · pk 20 @ 8:00p
−24h−18h−12h−6hnow
Light breeze backing 8° from the ene.
Rock Valley, IA
Barometer · 24h pressure · mb
STORMRAINCHANGEFAIRDRY9901000101010201030
Pressure · mb
963.4
+0.5 mb in 3h · steady · 28.45 inHg
Now
963.4
mb
3h
+0.5
mb
12h
-3.1
mb
24h
+2.8
mb
Regime · STORM
STORM
RAIN
CHANGE
FAIR
DRY
24h · Pressure · mb
range 960967
−24h−18h−12h−6hnow
Deep low — expect rough seas, strong wind, and persistent rain.
Rock Valley, IA
Air quality
56
AQI
Moderate
PM 2.5
4.4 μg/m³
PM 10
6.1 μg/m³
NO₂
1.3 μg/m³
Ozone
108.0 μg/m³
UV Index
0.3 Low
Rock Valley, IA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:28 AM
Sunrise
5:59 AM
Daylight
14h 44m
Sunset
8:43 PM
Civil dusk
2:17 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Rock Valley, IA
The moon
New Moon
0% illuminated
Moonrise
11:01 AM
Moonset
2:18 AM
In sign
♉︎ Taurus
Rock Valley, 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 →

Rock Valley at a glance

  • Today vs. normal: 6°F above the seasonal normal for this latitude
  • Last frost: May 5 (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 Rock Valley

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.