Weather in Tiffin, Iowa
Roses Bloom Along the Shelter Rows. Day 59 of spring. Read this microseason across nine climate regions →
Tiffin, IA
Sunday, May 17 at 12:53 AM
77
°
Overcast
Feels like
80°
Humidity
67%
Wind
8 mph
Sunrise
5:45 AM
Sunset
8:20 PM
Tiffin, IA
Hour by hour · 24h
72°
7p
70°
8p
68°
9p
69°
10p
67°
11p
67°
12a
64°
1a
63°
2a
64°
3a
62°
4a
61°
5a
58°
6a
58°
7a
61°
8a
65°
9a
68°
10a
71°
11a
75°
12p
77°
1p
80°
2p
82°
3p
83°
4p
83°
5p
82°
6p
Tiffin, IA
7-day forecast
- TodayMay 16Thunderstorm62%83°63°
- SundayMay 17Heavy Rain49%82°63°
- MondayMay 18Thunderstorm68%83°64°
- TuesdayMay 19Showers75%70°50°
- WednesdayMay 20Overcast—61°42°
- ThursdayMay 21Overcast—65°43°
- FridayMay 22Overcast—66°51°
Tiffin, IA
Next 24 hours · Mild now
Tiffin, IA
Anemometer · 24h winds · from true
From · True
SSE
153° · backing 157°
Direction
SSE
153°
Sustained
8
mph
Gust
17
mph
Peak 24h
46
avg 8
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
−24h−18h−12h−6hnow
Tiffin, IA
Air quality
54
AQI
Moderate
- PM 2.5
- 3.6 μg/m³
- PM 10
- 4.6 μg/m³
- NO₂
- 2.6 μg/m³
- Ozone
- 98.0 μg/m³
- UV Index
- 0.1 Low
Tiffin, IA
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:15 AM
Sunrise
5:45 AM
Daylight
14h 35m
Sunset
8:20 PM
Civil dusk
1:53 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Tiffin, IA
The moon
New Moon
0% illuminated
- Moonrise
- 10:49 AM
- Moonset
- 1:53 AM
- In sign
- ♉︎ Taurus
Tiffin, IA
Microseason · 28 of 72
May 16–20
Roses Bloom Along the Shelter Rows
plant
Tiffin at a glance
- Today vs. normal: 7°F above the seasonal normal for this latitude
- Last frost: April 26 (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.