Weather in Portland, IA
Portland, Thursday, 29 October, 08:34
Fog. Feels like 41°. High 62°, low 45°.
Monthly outlook for Portland, IA: average high 56.5°, average low 44.8°. That is 4° above the climate normal for October. Precipitation is expected on 6 days (about 3.8 inches), against a normal of 4 days and 1.2 inches. The warmest day looks like 12 November (67.4°), the coolest 7 November (33.6°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 29 October – 7 November | 55.9° | 51.4° | +2.5° |
| 8 November – 17 November | 57.6° | 45.6° | +6.6° |
| 18 November – 27 November | at normal | 40.4° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Dougherty (15 mi).
0
Portland, Friday, 30 October
Overcast. High 53°, low 41°.
0.22
Portland, Saturday, 31 October
Rain. High 62°, low 49°.
0
Portland, Sunday, 1 November
Partly cloudy. High 63°, low 52°.
1.22Portland, Monday, 2 November
Rain. High 63°, low 56°.
0.15Portland, Tuesday, 3 November
Rain. High 63°, low 54°.
1.17Portland, Wednesday, 4 November
Rain. High 55°, low 46°.
0.98Portland, Thursday, 5 November
Rain. High 48°, low 44°.
0.09Portland, Friday, 6 November
Light rain. High 44°, low 37°.
0Portland, Saturday, 7 November
Overcast. High 46°, low 34°.
0Portland, Sunday, 8 November
Overcast. High 45°, low 34°.
0Portland, Monday, 9 November
Partly cloudy. High 52°, low 38°.
0Portland, Tuesday, 10 November
Overcast. High 56°, low 40°.
0
Portland, Wednesday, 11 November
Mostly clear. High 59°, low 45°.
0Portland, Thursday, 12 November
Partly cloudy. High 67°, low 48°.
0Portland, Friday, 13 November
Partly cloudy. High 66°, low 51°.
0.02Portland, Saturday, 14 November
Climate normal for this date — 60-year average.
0.07Portland, Sunday, 15 November
Climate normal for this date — 60-year average.
0.06Portland, Monday, 16 November
Climate normal for this date — 60-year average.
0.09Portland, Tuesday, 17 November
Climate normal for this date — 60-year average.
0.06Portland, Wednesday, 18 November
Climate normal for this date — 60-year average.
0.09Portland, Thursday, 19 November
Climate normal for this date — 60-year average.
0.09Portland, Friday, 20 November
Climate normal for this date — 60-year average.
0.05Portland, Saturday, 21 November
Climate normal for this date — 60-year average.
0.04Portland, Sunday, 22 November
Climate normal for this date — 60-year average.
0.09Portland, Monday, 23 November
Climate normal for this date — 60-year average.
0.04Portland, Tuesday, 24 November
Climate normal for this date — 60-year average.
0.03Portland, Wednesday, 25 November
Climate normal for this date — 60-year average.
0.07
Portland, Thursday, 26 November
Climate normal for this date — 60-year average.
0.09Portland, Friday, 27 November
Climate normal for this date — 60-year average.
About the monthly outlook
How accurate is a 30-day forecast?
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 Portland, IA are built from the climate normal, the 60-year average, so they show typical weather for those dates rather than a specific forecast.
What does "above normal" mean?
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.
Where do the 66-year records come from?
They are real temperature extremes recorded in Portland, IA since 1960: the highest and lowest reading for each calendar date, with the year it happened.
How often is it updated?
The forecast portion refreshes every hour; the climate portion is based on long-term data and stays stable.
Sun and moon today
Weather history
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