Summit, Monday, 12 October, 12:38
Overcast. Feels like 85°. High 83°, low 61°.
Two-week outlook for Summit, IL: week one averages a high of 67.5° and week two 70.5°, so week two runs 2.9° warmer than week one. Around 1.7 inches of precipitation are expected over the 14 days, across 6 wet days. The nearest weekend, October 17: 58°, dry.
| Week | High | Low | Precipitation | Vs normal |
|---|---|---|---|---|
| 1st (October 12 – October 18) | 67.5° | 53.2° | 0.8 in / 2 d | +6.1° |
| 2nd (October 19 – October 25) | 70.5° | 58.2° | 0.9 in / 4 d | +11.5° |
Summit, Tuesday, 13 October
Light rain. High 83°, low 65°.
Summit, Wednesday, 14 October
Heavy rain. High 68°, low 59°.
Summit, Thursday, 15 October
Rain. High 61°, low 57°.
Summit, Friday, 16 October
Partly cloudy. High 57°, low 47°.
Summit, Saturday, 17 October
Clear. High 58°, low 40°.
Summit, Sunday, 18 October
Clear. High 62°, low 44°.
Summit, Monday, 19 October
Light rain. High 62°, low 52°.
Summit, Tuesday, 20 October
Rain. High 63°, low 55°.
Summit, Wednesday, 21 October
Overcast. High 74°, low 59°.
Summit, Thursday, 22 October
Overcast. High 76°, low 60°.
Summit, Friday, 23 October
Light rain. High 73°, low 65°.
Summit, Saturday, 24 October
Rain. High 77°, low 66°.
Summit, Sunday, 25 October
Light rain. High 69°, low 51°.
Week one is solid for planning — accuracy is high. Week two shows the trend: go by the averages and the comparison with normal, and check the details closer to the date.
It is the gap between the forecast and the climate normal for those same dates in Summit, IL, computed over 60 years. A positive value means the week runs warmer than usual.
Saturday and Sunday plans are what people check most, so we give them their own cards with temperature and precipitation.