Bertha, Friday, 9 October, 18:46
Overcast. Feels like 60°. High 70°, low 42°.
Bertha, Saturday, 10 October
Overcast. High 73°, low 46°.
Bertha, Sunday, 11 October
Heavy rain. High 68°, low 49°.
Bertha, Monday, 12 October
Light rain. High 74°, low 60°.
Bertha, Tuesday, 13 October
Light rain. High 79°, low 61°.
Bertha, Wednesday, 14 October
Light rain. High 73°, low 58°.
Bertha, Thursday, 15 October
Light rain. High 61°, low 51°.
Bertha, Friday, 16 October
Rain. High 71°, low 50°.
Bertha, Saturday, 17 October
Light rain. High 47°, low 40°.
Bertha, Sunday, 18 October
Overcast. High 47°, low 33°.
Bertha, Monday, 19 October
Overcast. High 50°, low 29°.
Bertha, Tuesday, 20 October
Overcast. High 56°, low 37°.
Bertha, Wednesday, 21 October
Clear. High 60°, low 36°.
Bertha, Thursday, 22 October
Clear. High 62°, low 38°.
Bertha, Friday, 23 October
Clear. High 64°, low 42°.
Bertha, Saturday, 24 October
Clear. High 67°, low 45°.
The first 16 days come from weather models — reliable for the first 3–5 days and progressively less so after that. Days 17 through 30 for Bertha, PA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
We compare the forecast against the climate normal for those exact calendar days, computed from 60 years of observations. The deviation shows how much the coming month differs from a typical one.
They are real temperature extremes recorded in Bertha, PA since 1960: the highest and lowest reading for each calendar date, with the year it happened.
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.