Union, Illinois Weather
Union, Illinois — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery, soil and crop conditions for Union, McHenry County.
Full aviation weather for Union is published on the Lake in the Hills Airport (K3CK) page, 18 km away. It carries the current METAR decoded into plain language — surface wind, visibility, cloud layers and ceiling, temperature and dewpoint, and altimeter setting — alongside the raw observation as transmitted. 6 airfields within reach of Union have their own pages, listed below.
The Terminal Aerodrome Forecast (TAF) is shown across its full validity period, with each change group broken out so you can see when conditions are expected to shift. Flight category is derived automatically — VFR, MVFR, IFR or LIFR — from reported ceiling and visibility, with runway details and field elevation alongside. Observations update roughly hourly and forecasts several times a day.
Other airports near Union: Dacy Airport (K0C0) 20 km · Galt Field (K10C) 23 km · Poplar Grove Airport (KC77) 26 km · Campbell Airport (KC81) 40 km · Grand Geneva Resort Airport (KC02) 44 km
Conditions reported at K3CK describe the airfield itself. Weather 18 km away can differ, particularly in terrain or near the coast. For conditions at Union specifically, see the current conditions and forecast above.
Soil conditions, frost risk and crop weather for Union.
About Union, Illinois
Union lies in a landscape shaped by the slow, persistent artistry of glaciers, where the land rises and falls in gentle swells across the fertile plains. It lies 7.4 miles north-west of Huntley, IL (from Huntley, IL: bearing 308°T), and is situated 7.4 miles south-west of Woodstock. The sky here feels vast, an unbroken canvas that shifts from the pale, washed-out blues of midday to the deep, bruised purples of approaching twilight, painting the fields of corn and soybeans in hues of gold and amber. The air carries the clean scent of turned earth and, in the warmer months, the sweet perfume of blooming clover, a constant reminder of the agricultural heart that beats beneath the surface. The rhythm of life in Union is measured by the seasons, by the planting and harvesting, and by the quiet hum of tractors working the land under that expansive Illinois sky. The story of Union is one of settlement and perseverance, a place where the echoes of early farmers and railroad expansion can still be felt. The local economy, while diversified, retains a strong connection to agriculture, with grain elevators standing as silent sentinels along the tracks that once brought prosperity. A notable feature is the Fox River, a ribbon of blue that meanders through the surrounding countryside, offering a tranquil contrast to the cultivated fields and providing a vital artery for both nature and recreation. This waterway, along with the enduring spirit of its residents, has helped to define the character of Union, fostering a sense of continuity and quiet pride in its own distinct heritage.
Live animated radar for Union and surroundings — RainViewer.
NOAA GOES-16 GEOCOLOR — live animated loop updated every 10 minutes. Shows cloud cover, storm systems and weather patterns across the continental US.
Source: NOAA/NESDIS GOES-East · Public domain · Auto-updates on page reload
| Location | Union, McHenry County, Illinois |
| Coordinates | 42.233078°N, 88.542313°W |
| Timezone | Central Time (America/Chicago) |
| ZIP Code(s) | 61532, 62635, 60433, 60180 |
| Area Code | 708, 312, 773 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Union, Illinois Weather Page
This page provides live weather conditions and forecasts for Union, Illinois, including current conditions, a 24-hour hourly forecast, 7-day outlook, NWS extended text forecast, precipitation radar and NOAA GOES-16 satellite imagery. Aviation weather — live METAR observations and TAF forecasts — is published separately on the pages for the nearest reporting airports, linked from the aviation section above. Additional sections may include tide predictions, wave height, wave direction and sea-surface temperature, a barometric pressure trend, and a solunar-based fishing forecast with a fishing-conditions rating for coastal localities, and soil temperature, crop weather and live USGS river gauge data for agricultural areas near a monitored waterway. All data updates automatically on every page visit.
Location data for Union includes coordinates 42.233078°N, 88.542313°W, situated in McHenry County. ZIP code 61532, 62635, 60433, 60180. Telephone area code: 708, 312, 773. Timezone: Central Time (America/Chicago).
Weather data is sourced from the NOAA National Weather Service (NWS) and the open-source Open-Meteo API. River and stream data is sourced from the USGS National Water Information System. Tide predictions are sourced from NOAA CO-OPS; marine and solunar data are modeled from Open-Meteo and public sunrise/moon calculations and should be treated as a general guide alongside on-the-water conditions. Radar is provided by RainViewer. Satellite imagery is sourced from NOAA/NESDIS GOES-East and is public domain.
