Weather in Derby, Iowa
Roses open on the Piedmont edge. Day 58 of spring. Read this microseason across nine climate regions →
Derby, IA
Saturday, May 16 at 11:54 PM
71
°
Showers
Feels like
72°
Humidity
89%
Wind
14 mph
Sunrise
5:54 AM
Sunset
8:25 PM
Derby, IA
Hour by hour · 24h
74°
6p
72°
7p
69°
8p
66°
9p
65°
10p
65°
11p
64°
13%
12a
62°
1a
61°
2a
60°
3a
59°
4a
59°
5a
57°
6a
58°
7a
62°
8a
67°
9a
71°
10a
75°
11a
78°
12p
81°
1p
83°
2p
83°
3p
84°
4p
83°
5p
Derby, IA
7-day forecast
- TodayMay 16Showers57%83°62°
- SundayMay 17Thunderstorm66%81°61°
- MondayMay 18Thunderstorm79%81°62°
- TuesdayMay 19Showers82%64°47°
- WednesdayMay 20Overcast—59°40°
- ThursdayMay 21Overcast—64°46°
- FridayMay 22Overcast11%66°54°
Derby, IA
Next 24 hours · Mild now
Derby, IA
Anemometer · 24h winds · from true
From · True
S
171° · backing 18°
Direction
S
171°
Sustained
14
mph
Gust
26
mph
Peak 24h
44
avg 11
Beaufort · 4 · MOD 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
Derby, IA
Air quality
46
AQI
Good
- PM 2.5
- 6.0 μg/m³
- PM 10
- 7.5 μg/m³
- NO₂
- 1.9 μg/m³
- Ozone
- 87.0 μg/m³
- UV Index
- 0.6 Low
Derby, IA
Almanac · Saturday, May 16
Flowers blooming in late autumn, a sure sign of a bad winter coming.
Civil dawn
10:25 AM
Sunrise
5:54 AM
Daylight
14h 31m
Sunset
8:25 PM
Civil dusk
1:57 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Derby, IA
The moon
New Moon
0% illuminated
- Moonrise
- 10:17 AM
- Moonset
- 12:39 AM
- In sign
- ♉︎ Taurus
Derby, IA
Microseason · 28 of 72
May 16–20
Roses open on the Piedmont edge
weather
Derby at a glance
- Today vs. normal: 71°F — typical for the season
- Last frost: April 22 (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 16, 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.