Weather in Prospect Heights, Illinois
Roses open along the stoops. Day 59 of spring. Read this microseason across nine climate regions →
Prospect Heights, IL
Sunday, May 17 at 4:52 AM
71
°
Overcast
Feels like
71°
Humidity
65%
Wind
9 mph
Sunrise
5:29 AM
Sunset
8:06 PM
Prospect Heights, IL
Hour by hour · 24h
52°
11p
54°
12a
52°
1a
51°
2a
53°
18%
3a
53°
4a
54°
5a
55°
6a
59°
7a
61°
8a
62°
9a
62°
10a
66°
11a
66°
12p
69°
1p
71°
2p
73°
3p
75°
4p
75°
5p
75°
6p
74°
7p
70°
8p
68°
9p
67°
10p
Prospect Heights, IL
7-day forecast
- TodayMay 16Drizzle51%84°65°
- SundayMay 17Heavy Rain37%87°63°
- MondayMay 18Heavy Rain60%81°69°
- TuesdayMay 19Light Showers53%76°56°
- WednesdayMay 20Overcast10%58°46°
- ThursdayMay 21Overcast—60°46°
- FridayMay 22Overcast11%60°50°
Prospect Heights, IL
Next 24 hours · Cool now
Prospect Heights, IL
Anemometer · 24h winds · from true
From · True
SSW
205° · backing 18°
Direction
SSW
205°
Sustained
9
mph
Gust
24
mph
Peak 24h
27
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
Prospect Heights, IL
Air quality
56
AQI
Moderate
- PM 2.5
- 5.9 μg/m³
- PM 10
- 7.0 μg/m³
- NO₂
- 15.5 μg/m³
- Ozone
- 78.0 μg/m³
- UV Index
- 0.0 Low
Prospect Heights, IL
Almanac · Sunday, May 17
When the dew is on the grass, rain will never come to pass.
Civil dawn
9:59 AM
Sunrise
5:29 AM
Daylight
14h 37m
Sunset
8:06 PM
Civil dusk
1:39 AM
Planting note
Direct sow okra, melons, and southern peas. Thin carrot rows.
Prospect Heights, IL
The moon
New Moon
0% illuminated
- Moonrise
- 10:33 AM
- Moonset
- 1:38 AM
- In sign
- ♊︎ Gemini
Prospect Heights, IL
Microseason · 28 of 72
May 16–20
Roses open along the stoops
plant
Prospect Heights at a glance
- Today vs. normal: 71°F — typical for the season
- Last frost: April 29 (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 17, 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).