Weather in Waterloo, Iowa
Roses Bloom Along the Shelter Rows. Day 58 of spring. Read this microseason across nine climate regions →
Waterloo, IA
Saturday, May 16 at 11:53 PM
80
°
Overcast
Feels like
80°
Humidity
45%
Wind
6 mph
Sunrise
5:46 AM
Sunset
8:25 PM
Waterloo, IA
Hour by hour · 24h
76°
6p
75°
7p
73°
8p
70°
10%
9p
71°
10p
68°
11p
68°
12a
67°
1a
64°
2a
63°
3a
61°
4a
59°
5a
58°
6a
60°
7a
63°
8a
67°
9a
71°
10a
75°
11a
79°
12p
82°
1p
85°
2p
86°
3p
87°
4p
87°
5p
Waterloo, IA
7-day forecast
- TodayMay 16Heavy Drizzle70%81°60°
- SundayMay 17Thunderstorm58%82°63°
- MondayMay 18Thunderstorm90%82°63°
- TuesdayMay 19Light Showers90%65°49°
- WednesdayMay 20Overcast—60°43°
- ThursdayMay 21Overcast—64°43°
- FridayMay 22Light Drizzle—66°52°
Waterloo, IA
Next 24 hours · Mild now
Waterloo, IA
Anemometer · 24h winds · from true
From · True
E
099° · veering 34°
Direction
E
099°
Sustained
6
mph
Gust
9
mph
Peak 24h
26
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
Waterloo, IA
Air quality
51
AQI
Moderate
- PM 2.5
- 3.6 μg/m³
- PM 10
- 4.7 μg/m³
- NO₂
- 1.8 μg/m³
- Ozone
- 108.0 μg/m³
- UV Index
- 0.8 Low
Waterloo, IA
Almanac · Saturday, May 16
Flowers blooming in late autumn, a sure sign of a bad winter coming.
Civil dawn
10:15 AM
Sunrise
5:46 AM
Daylight
14h 39m
Sunset
8:25 PM
Civil dusk
1:58 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Waterloo, IA
The moon
New Moon
0% illuminated
- Moonrise
- 10:07 AM
- Moonset
- 12:39 AM
- In sign
- ♉︎ Taurus
Waterloo, IA
Microseason · 28 of 72
May 16–20
Roses Bloom Along the Shelter Rows
weather
Waterloo at a glance
- Today vs. normal: 11°F above the seasonal normal for this latitude
- Last frost: May 1 (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 16, 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).