Union, Iowa Weather
Union, Iowa — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery, soil and crop conditions for Union, Hardin County.
Full aviation weather for Union is published on the Marshalltown Municipal Airport (KMIW) page, 19 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. 5 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: Iowa Falls Municipal Airport (KIFA) 30 km · Toledo Municipal Airport (K8C5) 51 km · Ames Municipal Airport (KAMW) 54 km · Hampton Municipal Airport (KHPT) 55 km
Conditions reported at KMIW describe the airfield itself. Weather 19 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, Iowa
Union rests in the heart of Iowa's rolling farmland, a place where the sky feels vast and the horizon stretches with an almost benevolent intent. It lies 15.7 miles north-north-west of Marshalltown, IA (from Marshalltown, IA: bearing 329°T), and is situated 8.2 miles south-south-east of Eldora. The land here is a mosaic of cultivated fields, their verdant rows stretching towards distant tree lines that soften the edges of the prairie. Creeks, like silver threads, meander through the landscape, their banks often fringed with the stubborn resilience of wild grasses and the occasional whisper of willow. The air, especially in the early morning, carries a clean, damp scent of turned soil and dew-kissed alfalfa, a palpable freshness that promises a new day. Even the quietude of Union has a character, a stillness punctuated by the distant hum of farm machinery or the sudden, cheerful chirrup of a meadowlark. The story of Union is deeply intertwined with the fertile earth that surrounds it, a testament to the enduring spirit of agriculture that has shaped Hardin County for generations. This is a place built on the steady labor of farmers, their lives marked by the seasons and the bounty of the land, a rhythm that continues to define the local economy. While large industries are absent, the strength of Union lies in its connection to the soil, the grain elevators standing as silent sentinels of its prosperity. The community itself is a close-knit one, where neighbors know each other by name and the pace of life allows for conversations that linger, fostering a sense of shared history and quiet pride in their corner of Iowa.
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, Hardin County, Iowa |
| Coordinates | 42.24554°N, 93.064647°W |
| Timezone | Central Time (America/Chicago) |
| ZIP Code(s) | 50258 |
| Area Code | 515 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Union, Iowa Weather Page
This page provides live weather conditions and forecasts for Union, Iowa, 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 42.245540°N, 93.064647°W, situated in Hardin County. ZIP code 50258. Telephone area code: 515. 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.
