Plaincast
What the forecast actually says — NWS Area Forecast Discussions, decoded into plain English.
Revised in 6 passages since the 11:58 PM discussion. See every revision.
Patchy fog in low-lying areas early this morning, burning off shortly after sunrise.
Trending drier, but still cannot rule out some isolated showers and a rumble of thunder into Saturday morning, especially in southwestern Wisconsin.
Additional showers and storms expected Sunday night through Tuesday morning. A few stronger thunderstorms are possible. The potential for heavy rainfall is increasing, especially Monday and Tuesday.
Seasonable conditions may return midweek.
Forecast remains on track. Patchy fog in low-lying areas will burn off shortly after sunrise. Expecting highs around 80 degrees with southerly winds. daily cumulus are expected, with no rain expected.
High pressure will continue to slide eastward this morning, meanwhile a surface low is progged to develop and track across central Canada. As a result, southern WI will be placed in between these systems and expect to see southerly winds pick up through the day today. Will see a bit of WAA with the southerly flow and temperatures be a degree or a few warmer today than yesterday. However, moisture advection will be lacking so will feel more comfortable humidity wise. OVernight temperatures will also be warmer with lows dipping into the lower 60s into Saturday morning. May also begin to see increasing cloud cover overnight aiding in the warmer temperatures.
Then the low pressure to our north will gradually work its way into the Hudson Bay region and drag the cold front across WI on Saturday. May see some showers along the front upstream make it in our western areas, given the lack of appreciable precipitable water (less than 1.5 inches), expect a mostly dry frontal passage as this trend continues on the 00z CAMs. Otherwise will see west to northwesterly wind shift behind the front later Saturday followed by cooler, more fall like temperatures in 50s again.
Issued Issued 1200 AM CDT Fri Sep 10 2026
High pressure returns to the region for Sunday resulting is a pleasant seasonal end to the weekend with highs only in the 70s and lows dipping into the 50s and maybe even cracking into the upper 40s. This high pressure is not expected to hang around for too long and quickly shifts east overnight Sunday into Monday as the pattern becomes a bit more active for the start of the week. Upstream a trough is progged to lift across the Northern Rockies and Northern Plains through the day. Ahead of it, looking at low-level WAA to gradually increase along with southerly surface winds and moisture advection to lift into southern WI during this time. Models continue to favor increased chance of rain chances (+40%) along the low-level WAA and surface warm front overnight Sunday through the day on Monday. Then later Monday night into early Tuesday expect the cold front to swing through the region as the main low traverses across the James Bay region.
While, this places southern WI in the warm sector of this system, a bulk of the latest mid-range guidances is keeping the upper-level dynamics to our north. Meanwhile any convection will be driven by low-level WAA, and unseasonable stronger LLJ, and timing of the cold frontal passage, which this far out is tough to pinpoint exact details. Also given the trend for more midday precipitation chances, may end up limiting instability building into southern WI and paired with later overnight/early morning timing of the cold front across our neck of the woods, may ultimately limit our thunderstorm potential with this early week system. Nevertheless, still plenty of time for things to shift and if we see this system slow down and the 40-50 knot LLJ scenarios materialize, it may be enough for a few stronger storms and potentially minor flooding concerns for portions of southern WI. Will continue to monitor over the coming days, but it does bear watching.
Behind the start of the week system, things are progged to settle down a bit toward the middle of next week as high pressure is progged to filter in behind it and bring a cooler airmass to the area.
This is the plain-text edition, decoded without AI so it loads anywhere. The full Plaincast experience — plain-English summaries beside the annotated original, with the forecast changelog — loads automatically with JavaScript, or open the interactive edition.
Data from the National Weather Service. Translated by Claude. About · For developers & agents · Subscribe: RSS feed for this office · Source on GitHub