Location & Surroundings
Halfmoon Islands is an island in Illinois, United States, at 223 m elevation. The nearest larger town is Fox Lake, 2 km to the east. The national capital Washington is about 1020 km to the east. The nearest airport is Pillow Hill Airport, 6 km away.
Overview
Halfmoon Islands is island in McHenry County, Illinois, United States.
It is located in McHenry County, United States.
Basic Data
- Country United States
- Located in McHenry County
- Type island (ISL)
- a tract of land, smaller than a continent, surrounded by water at high water
Geography
-
Coordinates
42° 23' 28" N, 88° 12' 32" W
- Elevation 223 m (DEM: 225 m)
- Timezone America/Chicago
- Time Shift GMT -6 (DST -5)
Statistics & Country
- Pop. Density 231 p/km²
- Built-up 3.5%
- Settlement Very low density rural
- Currency Dollar (USD)
- Phone Prefix +1
Sun & Local Time
- Local time 04:15
- Sunrise 07:09
- Sunset 18:06
- Day length 10 h 57 min
Other islands nearby
Nearby
Weather in Halfmoon Islands
Current conditions and a 3-day (72-hour) weather forecast for Halfmoon Islands, updated from the NOAA GFS model.
Now 10.1 C with mostly clear skies and a 4.2 m/s southerly wind. Next 24h: 6.3 to 17.4 C, max wind 4.2 m/s. No precipitation expected. Solar peaks near 373 W/m2.
Temperature
10.1 C
Wind
4.2 m/s S (195 deg)
Humidity
60 %
Pressure
1,027.2 hPa
Clouds
0 %
Precip
0.00 mm
Solar
0.0 W/m2
UV-B
n/a
| Hour | Temp (C) | Wind (m/s) | Dir (deg) | RH (%) | Pressure (hPa) | Precip (step/total mm) | Clouds (%) | Solar (W/m2) | UV-B (W/m2) |
|---|---|---|---|---|---|---|---|---|---|
| NOW | 10.1 | 4.2 | 195 | 60 | 1,027.2 | - / 0.00 | 0 | 0.0 | n/a |
| 6h | 7.5 | 3.5 | 218 | 61 | 1,028.0 | 0.00 / 0.00 | 0 | 0.0 | n/a |
| 12h | 6.3 | 2.6 | 226 | 65 | 1,028.7 | 0.00 / 0.00 | 1 | 0.0 | n/a |
| 18h | 17.4 | 2.4 | 204 | 41 | 1,027.8 | 0.00 / 0.00 | 4 | 372.5 | n/a |
| Tomorrow | 12.0 | 1.5 | 176 | 61 | 1,027.4 | 0.00 / 0.00 | 97 | 292.2 | n/a |
| 30h | 9.8 | 1.4 | 85 | 64 | 1,028.1 | 0.00 / 0.00 | 53 | 0.0 | n/a |
| 36h | 8.1 | 1.1 | 70 | 70 | 1,028.7 | 0.00 / 0.00 | 0 | 0.0 | n/a |
| 42h | 18.4 | 2.2 | 134 | 40 | 1,027.4 | 0.00 / 0.00 | 0 | 367.8 | n/a |
| Wednesday | 11.2 | 2.8 | 107 | 65 | 1,027.0 | 0.00 / 0.00 | 0 | 289.7 | n/a |
| 54h | 9.9 | 1.8 | 177 | 66 | 1,026.2 | 0.00 / 0.00 | 0 | 0.0 | n/a |
| 60h | 8.5 | 1.7 | 198 | 71 | 1,025.7 | 0.00 / 0.00 | 0 | 0.0 | n/a |
| 66h | 19.2 | 2.5 | 216 | 41 | 1,024.5 | 0.00 / 0.00 | 0 | 359.5 | n/a |
| Thursday | 13.7 | 2.1 | 204 | 61 | 1,023.7 | 0.00 / 0.00 | 0 | 280.4 | n/a |
Source: NOAA GFS 0.25° (run 2026-10-19 00:00 UTC).
FAQ
What is the current weather and next 24-hour outlook in Halfmoon Islands?
Now 10.1 C with mostly clear skies and a 4.2 m/s southerly wind. Next 24h: 6.3 to 17.4 C, max wind 4.2 m/s. No precipitation expected. Solar peaks near 373 W/m2.
Is precipitation expected in the next 24 hours?
No measurable precipitation is expected in the next 24 hours.
When are sunrise and sunset in Halfmoon Islands today?
Sunrise around 07:09 and sunset around 18:06 (local time). Day length about 10h 57m.
What is the local time in Halfmoon Islands?
Local time is 04:15. Time zone: America/Chicago (UTC-05:00).
What type of place is Halfmoon Islands?
Halfmoon Islands is a island.
What is the elevation of Halfmoon Islands?
Elevation about 223 m. DEM 225 m.
Where is Halfmoon Islands located?
It is at 42.39113, -88.20898 (latitude, longitude).
Which country is Halfmoon Islands in?
It is in United States.
Links
- Wikidata entry Wikidata entry