Big Rock, Sunday, 9 August, 07:01
Mostly clear. Feels like 67°. High 84°, low 64°.
Two-week outlook for Big Rock, IL: week one averages a high of 80.1° and week two 82.6°, so week two runs 2.5° warmer than week one. Around 0.8 inches of precipitation are expected over the 14 days, across 5 wet days. The nearest weekend, August 9: 84°, with precipitation.
| Week | High | Low | Precipitation | Vs normal |
|---|---|---|---|---|
| 1st (August 9 – August 15) | 80.1° | 64.2° | 0.7 in / 4 d | — |
| 2nd (August 16 – August 22) | 82.6° | 66.7° | 0.1 in / 1 d | — |
Big Rock, Monday, 10 August
Rain. High 89°, low 71°.
Big Rock, Tuesday, 11 August
Rain. High 81°, low 69°.
Big Rock, Wednesday, 12 August
Light rain. High 82°, low 68°.
Big Rock, Thursday, 13 August
Light rain. High 75°, low 62°.
Big Rock, Friday, 14 August
Overcast. High 75°, low 57°.
Big Rock, Saturday, 15 August
Light rain. High 74°, low 59°.
Big Rock, Sunday, 16 August
Light rain. High 74°, low 62°.
Big Rock, Monday, 17 August
Light rain. High 80°, low 64°.
Big Rock, Tuesday, 18 August
Overcast. High 77°, low 63°.
Big Rock, Wednesday, 19 August
Light rain. High 85°, low 66°.
Big Rock, Thursday, 20 August
Overcast. High 87°, low 74°.
Big Rock, Friday, 21 August
Mostly clear. High 85°, low 71°.
Big Rock, Saturday, 22 August
Clear. High 91°, low 67°.
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 Big Rock, 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.