Herndon, Tuesday, 13 October, 04:46
Clear. Feels like 52°. High 72°, low 53°.
Two-week outlook for Herndon, IA: week one averages a high of 61.1° and week two 63°, so week two runs 1.9° warmer than week one. Around 4.1 inches of precipitation are expected over the 14 days, across 5 wet days. The nearest weekend, October 17: 59°, dry.
| Week | High | Low | Precipitation | Vs normal |
|---|---|---|---|---|
| 1st (October 13 – October 19) | 61.1° | 47.6° | 1.0 in / 2 d | — |
| 2nd (October 20 – October 26) | 63° | 50.1° | 3.0 in / 3 d | — |
Herndon, Wednesday, 14 October
Overcast. High 67°, low 49°.
Herndon, Thursday, 15 October
Heavy rain. High 60°, low 52°.
Herndon, Friday, 16 October
Partly cloudy. High 54°, low 44°.
Herndon, Saturday, 17 October
Clear. High 59°, low 37°.
Herndon, Sunday, 18 October
Overcast. High 60°, low 47°.
Herndon, Monday, 19 October
Light rain. High 55°, low 51°.
Herndon, Tuesday, 20 October
Clear. High 72°, low 49°.
Herndon, Wednesday, 21 October
Heavy rain. High 69°, low 59°.
Herndon, Thursday, 22 October
Heavy rain. High 68°, low 65°.
Herndon, Friday, 23 October
Rain. High 67°, low 50°.
Herndon, Saturday, 24 October
Clear. High 54°, low 42°.
Herndon, Sunday, 25 October
Overcast. High 55°, low 44°.
Herndon, Monday, 26 October
Clear. High 58°, low 42°.
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 Herndon, IA, 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.