Harper, Friday, 9 October, 12:57
Overcast. Feels like 57°. High 69°, low 52°.
Two-week outlook for Harper, IL: week one averages a high of 70.9° and week two 56.4°, so week two runs 14.5° 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: 78°, dry.
| Week | High | Low | Precipitation | Vs normal |
|---|---|---|---|---|
| 1st (October 9 – October 15) | 70.9° | 56.5° | 0.3 in / 2 d | — |
| 2nd (October 16 – October 22) | 56.4° | 41.3° | 1.4 in / 2 d | — |
Harper, Saturday, 10 October
Overcast. High 78°, low 58°.
Harper, Sunday, 11 October
Clear. High 75°, low 54°.
Harper, Monday, 12 October
Mostly clear. High 81°, low 64°.
Harper, Tuesday, 13 October
Overcast. High 71°, low 61°.
Harper, Wednesday, 14 October
Overcast. High 64°, low 55°.
Harper, Thursday, 15 October
Rain. High 59°, low 52°.
Harper, Friday, 16 October
Heavy rain. High 57°, low 40°.
Harper, Saturday, 17 October
Partly cloudy. High 44°, low 34°.
Harper, Sunday, 18 October
Overcast. High 51°, low 31°.
Harper, Monday, 19 October
Overcast. High 59°, low 38°.
Harper, Tuesday, 20 October
Clear. High 63°, low 43°.
Harper, Wednesday, 21 October
Light rain. High 63°, low 50°.
Harper, Thursday, 22 October
Rain. High 59°, low 53°.
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 Harper, 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.