A fast moving low -pressure system tracks across the Plains into the Ohio Valley and Northeast dropping some light snow and rain as it passes through Tuesday and into Wednesday. A strong ridge will build behind this system bringing calm weather to the Northern and Central Plains for the day Wednesday. Meanwhile rain, wind and snow target the West Coast for Tuesday. The graphic (to the right) indicates the high pressure that builds over the Central states early Wednesday with the purple color indicating areas of precipitation.
For Champaign-Urbana, we can expect some minor winter weather to head our direction. For Tuesday, we will still reach a daytime high of 41°F with an early morning low of 27 °F. Cloud cover throughout the day Tuesday will remain mostly cloudy with a chance of rain during the day turning to a wintry mix or light snow overnight as the temperature drops below freezing. Winds will alternate from the W/NW to N with speeds increasing in the later hours at 5-15 mph. For Wednesday, temperatures will sadly drop back down to the 30s with a high of 34°F and an overnight low of 24°F. Wednesday will become partly sunny after a small chance of flurries in the morning hours along with a NW becoming W wind at 5-10mph.
Temperatures on Tuesday didn't get as warm as I predicted they would with the daytime high only reaching 37°F, while my low was 3 degrees too warm from the actual low of 24°F. Precipitation did become a wintry mix, but only brought some trace amounts. Also the wind direction became more northeasterly and didn't increase just as much as I thought they would. For Wednesday, my forecast high was 2 degrees too warm and 4 degrees too cold from the actual high and low of 32°F and 28°F. Winds did end up from the NW, but were slightly stronger than 10 mph. In addition, we did also see some flurries that brought trace amounts of accumulation during the morning.
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