Janesville, Wisconsin Weather
Janesville, Wisconsin — live current conditions, hourly and 7-day forecasts, NWS alerts, radar and satellite imagery for Janesville, Rock County.
Full aviation weather for Janesville is published on the Southern Wisconsin Regional Airport (KJVL) page, 7 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 Janesville 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 Janesville: Brodhead Airport (KC37) 31 km · Albany Airport (K54W) 33 km · Monroe Municipal Airport (KEFT) 47 km · Verona Airport (KW19) 53 km · Chicago Rockford International Airport (KRFD) 55 km
Conditions reported at KJVL describe the airfield itself. Weather 7 km away can differ, particularly in terrain or near the coast. For conditions at Janesville specifically, see the current conditions and forecast above.
About Janesville, Wisconsin
Janesville unfolds across a landscape of gentle, rolling terrain, a place where the Rock River, a ribbon of cool, brown water, carves a patient path through fertile plains. It lies 12.1 miles north of Beloit, WI (from Beloit, WI: bearing 3°T), and is situated 7.4 miles south-south-west of Milton. The air here, especially in the hushed moments before dawn, carries the scent of damp earth and the distant, sweet perfume of ripening corn, a palpable reminder of the land's enduring generosity. Mature oaks, their branches reaching like ancient arms, punctuate the fields and line the residential streets, offering a dappled shade that softens the bright Wisconsin sun. In the early evening, the sky above Janesville often deepens into shades of bruised plum and soft rose, a fleeting artistry that mirrors the quiet resilience of the community. This was a place forged by ambition and hard work, a testament to the pioneering spirit that settled the rich Wisconsin soil. Janesville became known as the "Beloit Gateway," a hub connecting agricultural bounty to broader markets, its economy once buoyed by the robust manufacturing of farm machinery, a legacy still whispered in the industrial districts. The city's character is deeply intertwined with its agricultural roots, evident in the surrounding patchwork of farms and the enduring appreciation for the changing seasons. Though industries have shifted, a sense of grounded practicality persists, a quiet pride in craftsmanship and a neighborly spirit that still defines the everyday cadence of Janesville.
Live animated radar for Janesville 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 | Janesville, Rock County, Wisconsin |
| Coordinates | 42.682788°N, 89.018722°W |
| Timezone | Central Time (America/Chicago) |
| ZIP Code(s) | 53545, 53546, 53547, 53548 |
| Area Code | 715 |
| Page generated | September 2026 |
| Weather data | Open-Meteo (open-source), NOAA National Weather Service |
About This Janesville, Wisconsin Weather Page
This page provides live weather conditions and forecasts for Janesville, Wisconsin, 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 Janesville includes coordinates 42.682788°N, 89.018722°W, situated in Rock County. ZIP code 53545, 53546, 53547, 53548. Telephone area code: 715. 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.
