Weather in Williamson, Iowa
Roses Bloom Along the Shelter Rows. Day 59 of spring. Read this microseason across nine climate regions →
Williamson, IA
Sunday, May 17 at 2:53 AM
65
°
Heavy Rain
Feels like
61°
Humidity
87%
Wind
20 mph
Sunrise
5:53 AM
Sunset
8:25 PM
Williamson, IA
Hour by hour · 24h
69°
9p
68°
10p
66°
11p
64°
14%
12a
65°
1a
64°
2a
63°
3a
61°
4a
59°
5a
59°
6a
60°
7a
65°
8a
69°
9a
73°
10a
77°
11a
80°
12p
83°
1p
85°
2p
87°
3p
87°
4p
85°
5p
86°
6p
87°
7p
82°
8p
Williamson, IA
7-day forecast
- TodayMay 16Heavy Rain78%87°61°
- SundayMay 17Thunderstorm64%80°61°
- MondayMay 18Showers75%79°64°
- TuesdayMay 19Showers81%64°47°
- WednesdayMay 20Overcast—59°40°
- ThursdayMay 21Overcast—64°47°
- FridayMay 22Overcast—66°54°
Williamson, IA
Next 24 hours · Mild now
Williamson, IA
Anemometer · 24h winds · from true
From · True
E
085° · veering 11°
Direction
E
085°
Sustained
20
mph
Gust
37
mph
Peak 24h
37
avg 10
Beaufort · 5 · FRESH 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
Williamson, IA
Air quality
48
AQI
Good
- PM 2.5
- 4.4 μg/m³
- PM 10
- 5.0 μg/m³
- NO₂
- 2.6 μg/m³
- Ozone
- 89.0 μg/m³
- UV Index
- 0.0 Low
Williamson, IA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:24 AM
Sunrise
5:53 AM
Daylight
14h 32m
Sunset
8:25 PM
Civil dusk
1:57 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Williamson, IA
The moon
New Moon
0% illuminated
- Moonrise
- 10:58 AM
- Moonset
- 1:57 AM
- In sign
- ♊︎ Gemini
Williamson, IA
Microseason · 28 of 72
May 16–20
Roses Bloom Along the Shelter Rows
plant
Williamson at a glance
- Today vs. normal: 6°F below the seasonal normal for this latitude
- Last frost: April 23 (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.