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Summit, WI Weather Tomorrow

Use tomorrow's Summit weather forecast and the next 5 day outlook to track precipitation probability, daily and nightly weather conditions, high and low temperature trends, sunrise and sunset information, sky cover, wind speed, wind direction, and wind chill for the Summit area.
Updated: Mon Sep 21st 2026 7:45 PM CDT
Summit, WI Weather – 9-21 – Overcast
56° / 41°
Overcast
Daytime highs will reach 56°F with lows dropping to 41°F in Summit, where skies will be overcast. There might be light rainfall having a 15% chance. Winds will be light at 10mph and gusts of 21mph at 10 PM. The humidity will be on the higher side, averaging about 63%, the maximum being 63% at 11 PM and 51% being its lowest at 8 PM. Barometric pressure is its highest of 30.34inHg at 11 PM, a lowest point of 30.31inHg at 8 PM with an avg 30.33inHg.
Summit, WI Weather – 9-22 – Sunny
59° / 42°

Weather Tomorrow

Sunny
In Summit, it will be sunny with highs near 59°F and lows around 42°F. There's a very small chance of rainfall, only about 7%. Winds will be light at 9mph and gusts of 24.4mph at 11 PM. The humidity will be on the higher side, averaging about 64%, the maximum being 86% at 11 PM and 37% being its lowest at 3 PM. Barometric pressure is its highest of 30.45inHg at 10 PM, a lowest point of 30.33inHg at 4 PM with an avg 30.39inHg.
Summit, WI Weather – 9-23 – Sunny
62° / 46°
Sunny
Summit could see sunshine with daytime highs of 62°F and nighttime lows near 46°F. There's a very small chance of rainfall, only about 6%. Winds will be light at 9mph and gusts of 26.9mph at 12 AM. The humidity will be on the higher side, averaging about 72%, the maximum being 97% at 7 AM and 42% being its lowest at 4 PM. Barometric pressure is its highest of 30.5inHg at 7 AM, a lowest point of 30.38inHg at 4 PM with an avg 30.44inHg.
Summit, WI Weather – 9-24 – Overcast
62° / 50°
Overcast
Overcast is in the forecast for Summit, with a high of 62°F and a low of 50°F. There might be light rainfall having a 18% chance. Winds will be light at 9mph and gusts of 18.4mph at 8 AM. The humidity will be on the higher side, averaging about 75%, the maximum being 98% at 7 AM and 50% being its lowest at 2 PM. Barometric pressure is its highest of 30.43inHg at 12 AM, a lowest point of 30.3inHg at 5 PM with an avg 30.36inHg.
Summit, WI Weather – 9-25 – Overcast
62° / 51°
Overcast
Highs will reach 62°F with lows near 51°F in Summit, where overcast is. There might be light rainfall having a 25% chance with an estimated 0in. Winds will be light at 10mph and gusts of 18.1mph at 11 PM. The humidity will be on the higher side, averaging about 80%, the maximum being 96% at 5 AM and 60% being its lowest at 2 PM. Barometric pressure is its highest of 30.32inHg at 2 AM, a lowest point of 30.2inHg at 6 PM with an avg 30.26inHg.
Summit, WI Weather – 9-26 – Scattered Showers
55° / 48°
Scattered Showers
Highs will reach 55°F with lows near 48°F in Summit, where passing showers are. The chance of rain is 87% with an estimated 0.26in. Wind will be moderate, blowing around 13mph on average and gusts of 29.3mph at 7 AM. High humidity with average of 84% is anticipated, the maximum being 98% at 10 PM and 70% being its lowest at 7 AM. Barometric pressure is its highest of 30.2inHg at 12 AM, a lowest point of 30inHg at 11 PM with an avg 30.1inHg.

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