Markham, Friday, 9 October, 13:26
Overcast. Feels like 72°. High 73°, low 51°.
Two-week outlook for Markham, IL: week one averages a high of 72° and week two 60.5°, so week two runs 11.5° cooler than week one. Around 1.7 inches of precipitation are expected over the 14 days, across 4 wet days. The nearest weekend, October 10: 77°, dry.
| Week | High | Low | Precipitation | Vs normal |
|---|---|---|---|---|
| 1st (October 9 – October 15) | 72° | 57.3° | 0.4 in / 2 d | — |
| 2nd (October 16 – October 22) | 60.5° | 45.2° | 1.3 in / 2 d | — |
Markham, Saturday, 10 October
Overcast. High 77°, low 59°.
Markham, Sunday, 11 October
Rain. High 74°, low 57°.
Markham, Monday, 12 October
Overcast. High 81°, low 61°.
Markham, Tuesday, 13 October
Light rain. High 75°, low 61°.
Markham, Wednesday, 14 October
Overcast. High 63°, low 57°.
Markham, Thursday, 15 October
Rain. High 60°, low 54°.
Markham, Friday, 16 October
Rain. High 68°, low 45°.
Markham, Saturday, 17 October
Overcast. High 48°, low 37°.
Markham, Sunday, 18 October
Partly cloudy. High 53°, low 37°.
Markham, Monday, 19 October
Overcast. High 62°, low 42°.
Markham, Tuesday, 20 October
Clear. High 67°, low 48°.
Markham, Wednesday, 21 October
Overcast. High 68°, low 53°.
Markham, Thursday, 22 October
Rain. High 59°, low 54°.
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 Markham, 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.