Weather in Castalia, Iowa
Roses Bloom Along the Shelter Rows. Day 59 of spring. Read this microseason across nine climate regions →
Castalia, IA
Sunday, May 17 at 3:42 AM
67
°
Partly Cloudy
Feels like
64°
Humidity
50%
Wind
6 mph
Sunrise
5:41 AM
Sunset
8:24 PM
Castalia, IA
Hour by hour · 24h
61°
40%
10p
60°
23%
11p
60°
12a
58°
21%
1a
58°
2a
57°
3a
57°
4a
55°
5a
54°
6a
56°
7a
60°
8a
64°
9a
67°
10a
71°
11a
75°
12p
78°
1p
80°
2p
83°
3p
84°
4p
84°
5p
84°
6p
83°
7p
78°
8p
75°
10%
9p
Castalia, IA
7-day forecast
- TodayMay 16Light Rain94%80°59°
- SundayMay 17Thunderstorm74%74°61°
- MondayMay 18Showers75%78°61°
- TuesdayMay 19Showers92%63°46°
- WednesdayMay 20Overcast—56°44°
- ThursdayMay 21Overcast—59°39°
- FridayMay 22Light Drizzle10%56°48°
Castalia, IA
Next 24 hours · Cool now
Castalia, IA
Anemometer · 24h winds · from true
From · True
ENE
067° · backing 158°
Direction
ENE
067°
Sustained
6
mph
Gust
8
mph
Peak 24h
18
avg 5
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
−24h−18h−12h−6hnow
Castalia, IA
Air quality
48
AQI
Good
- PM 2.5
- 6.1 μg/m³
- PM 10
- 7.6 μg/m³
- NO₂
- 8.1 μg/m³
- Ozone
- 67.0 μg/m³
- UV Index
- 0.0 Low
Castalia, IA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:10 AM
Sunrise
5:41 AM
Daylight
14h 43m
Sunset
8:24 PM
Civil dusk
1:58 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Castalia, IA
The moon
New Moon
0% illuminated
- Moonrise
- 10:44 AM
- Moonset
- 1:59 AM
- In sign
- ♊︎ Gemini
Castalia, IA
Microseason · 28 of 72
May 16–20
Roses Bloom Along the Shelter Rows
plant
Castalia at a glance
- Today vs. normal: 67°F — typical for the season
- 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).