Grinnell, Iowa Weather
Grinnell, Iowa — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery for Grinnell, Poweshiek County.
Full aviation weather for Grinnell is published on the Grinnell Regional Airport (KGGI) page, 4 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 Grinnell 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 Grinnell: Newton Municipal Airport (KTNU) 26 km · Toledo Municipal Airport (K8C5) 31 km · Belle Plaine Municipal Airport (KTZT) 39 km · Pella Municipal Airport (KPEA) 42 km · Marshalltown Municipal Airport (KMIW) 44 km
Conditions reported at KGGI describe the airfield itself. Weather 4 km away can differ, particularly in terrain or near the coast. For conditions at Grinnell specifically, see the current conditions and forecast above.
About Grinnell, Iowa
Grinnell unfolds across a landscape of broad, fertile plains, where fields of corn and soybeans stretch towards horizons that seem to hold the entire sky. It lies 23.2 miles south-south-east of Marshalltown, IA (from Marshalltown, IA: bearing 156°T), and is situated 9.7 miles east of Kellogg. The land itself, gently rolling and deeply tilled, speaks of generations of careful cultivation, a quiet testament to the enduring partnership between people and soil. In the late afternoon, the sun, low and golden, casts long shadows across the cultivated earth, painting the scene with a soft, almost tangible warmth that lingers even after the light begins to fade. The air, carrying the faint, sweet scent of ripening grain, hums with the low thrum of distant farm equipment, a constant, reassuring pulse. The roots of Grinnell run deep, tracing back to the late 19th century when it was established as a stop along a burgeoning railroad line. This early connection to commerce and travel helped shape its character, fostering a spirit of enterprise that continues to define its local economy, still heavily influenced by agriculture and the industries that support it. A notable landmark, the historic Grinnell College, lends an intellectual vibrancy to the town, its stately buildings and manicured grounds a distinctive presence amidst the surrounding prairie. This blend of pragmatic farming heritage and academic pursuit creates a unique rhythm in Grinnell, a place where the steadfastness of the land meets a forward-looking curiosity.
Live animated radar for Grinnell 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 | Grinnell, Poweshiek County, Iowa |
| Coordinates | 41.743049°N, 92.722412°W |
| Timezone | Central Time (America/Chicago) |
| ZIP Code(s) | 50112 |
| Area Code | 515 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Grinnell, Iowa Weather Page
This page provides live weather conditions and forecasts for Grinnell, 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 Grinnell includes coordinates 41.743049°N, 92.722412°W, situated in Poweshiek County. ZIP code 50112. 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.
