Boulder, Illinois Weather
Boulder, Illinois — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery, soil and crop conditions for Boulder, Clinton County.
Full aviation weather for Boulder is published on the Greenville Airport (KGRE) page, 20 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 Boulder 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 Boulder: Centralia Municipal Airport (KENL) 23 km · Salem–Leckrone Airport (KSLO) 24 km · Vandalia Municipal Airport (KVLA) 33 km · Mount Vernon Outland Airport (KMVN) 52 km · Scott AFB/Midamerica Airport (KBLV) 56 km
Conditions reported at KGRE describe the airfield itself. Weather 20 km away can differ, particularly in terrain or near the coast. For conditions at Boulder specifically, see the current conditions and forecast above.
Soil conditions, frost risk and crop weather for Boulder.
About Boulder, Illinois
Boulder lies in a gentle depression of the land, where the soil, a rich, dark loam, speaks of centuries of patient growth and decay. It lies 37.7 miles east-north-east of O'Fallon, IL (from O'Fallon, IL: bearing 79°T), and is situated 9.9 miles north-east of Carlyle. The landscape here is not dramatic, but possesses a quiet dignity; broad fields of corn and soybeans unfurl towards horizons softened by the haze of summer afternoons, their green and gold hues shifting with the breeze. Scattered groves of oak and maple punctuate the cultivated expanses, their leaves rustling with secrets only the wind understands, and in the distance, the land rises imperceptibly, suggesting the slow, geological unfolding of the earth. The air, especially in the early morning, carries the clean scent of damp earth and growing things, a palpable freshness that seems to linger long after the sun has climbed high. The history of Boulder is as deeply rooted as the ancient trees that once stood sentinel over these rolling acres. Settled by those seeking fertile ground and a life of honest labor, the economy of Boulder has long been tied to the bounty of its soil, with agriculture forming the backbone of its existence. The rhythm of planting and harvest dictates the pulse of life here, a cadence passed down through generations. While no grand monuments mark its past, the weathered barns and sturdy farmhouses dotting the countryside are silent testaments to the enduring spirit of its people. The local character is one of quiet resilience and neighborly concern, a place where the slowing pace of life allows for genuine connection, and the simple beauty of a clear night sky, unmarred by city lights, is a nightly marvel.
Live animated radar for Boulder 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 | Boulder, Clinton County, Illinois |
| Coordinates | 38.696715°N, 89.225627°W |
| Timezone | Central Time (America/Chicago) |
| ZIP Code(s) | 62231 |
| Area Code | 217 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Boulder, Illinois Weather Page
This page provides live weather conditions and forecasts for Boulder, 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 Boulder includes coordinates 38.696715°N, 89.225627°W, situated in Clinton County. ZIP code 62231. Telephone area code: 217. 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.
