Weather in Cortland, Illinois
Roses open along the stoops. Day 59 of spring. Read this microseason across nine climate regions →
Cortland, IL
Sunday, May 17 at 5:02 AM
69
°
Overcast
Feels like
67°
Humidity
71%
Wind
12 mph
Sunrise
5:32 AM
Sunset
8:10 PM
Cortland, IL
Hour by hour · 24h
55°
12a
54°
1a
53°
23%
2a
54°
3a
53°
4a
54°
5a
56°
10%
6a
57°
7a
59°
8a
61°
9a
62°
10a
65°
11a
68°
12p
71°
1p
73°
2p
76°
3p
76°
4p
76°
5p
76°
6p
74°
7p
71°
8p
70°
9p
68°
10p
67°
11p
Cortland, IL
7-day forecast
- TodayMay 17Light Drizzle22%86°65°
- MondayMay 18Showers67%79°68°
- TuesdayMay 19Showers53%73°53°
- WednesdayMay 20Overcast—61°44°
- ThursdayMay 21Overcast—64°42°
- FridayMay 22Overcast11%60°48°
- SaturdayMay 23Overcast11%69°54°
Cortland, IL
Next 24 hours · Cool now
Cortland, IL
Anemometer · 24h winds · from true
From · True
S
188° · backing 41°
Direction
S
188°
Sustained
12
mph
Gust
21
mph
Peak 24h
22
avg 9
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
Cortland, IL
Air quality
45
AQI
Good
- PM 2.5
- 5.6 μg/m³
- PM 10
- 6.5 μg/m³
- NO₂
- 8.1 μg/m³
- Ozone
- 70.0 μg/m³
- UV Index
- 0.0 Low
Cortland, IL
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
10:02 AM
Sunrise
5:32 AM
Daylight
14h 38m
Sunset
8:10 PM
Civil dusk
1:42 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Cortland, IL
The moon
New Moon
0% illuminated
- Moonrise
- 10:37 AM
- Moonset
- 1:41 AM
- In sign
- ♊︎ Gemini
Cortland, IL
Microseason · 28 of 72
May 16–20
Roses open along the stoops
plant
Cortland at a glance
- Today vs. normal: 69°F — typical for the season
- Last frost: April 28 (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.