Weather in Brennan, WA
Brennan, Monday, 19 October, 04:09
Overcast. Feels like 44°. High 57°, low 44°.
Monthly outlook for Brennan, WA: average high 53.8°, average low 42.9°. That is 0.2° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 9 days and 4.2 inches. The warmest day looks like 21 October (61°), the coolest 3 November (38.3°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 19 October – 28 October | 55.4° | 54.5° | +0.5° |
| 29 October – 7 November | 51.2° | 51.3° | -0.1° |
| 8 November – 17 November | at normal | 48.8° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Bellingham (6 mi).
0
Brennan, Tuesday, 20 October
Mostly clear. High 61°, low 44°.
0
Brennan, Wednesday, 21 October
Clear. High 61°, low 39°.
0.02
Brennan, Thursday, 22 October
Light rain. High 56°, low 44°.
0
Brennan, Friday, 23 October
Partly cloudy. High 54°, low 42°.
0Brennan, Saturday, 24 October
Overcast. High 51°, low 41°.
0.13Brennan, Sunday, 25 October
Light rain. High 50°, low 43°.
0Brennan, Monday, 26 October
Overcast. High 54°, low 41°.
0Brennan, Tuesday, 27 October
Overcast. High 58°, low 41°.
0Brennan, Wednesday, 28 October
Overcast. High 53°, low 42°.
0Brennan, Thursday, 29 October
Overcast. High 51°, low 46°.
0.01Brennan, Friday, 30 October
Light rain. High 52°, low 47°.
0.19Brennan, Saturday, 31 October
Light rain. High 50°, low 46°.
0.13Brennan, Sunday, 1 November
Light rain. High 48°, low 44°.
0Brennan, Monday, 2 November
Light rain. High 52°, low 43°.
0Brennan, Tuesday, 3 November
Clear. High 54°, low 38°.
0.38Brennan, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.22Brennan, Thursday, 5 November
Climate normal for this date — 60-year average.
0.35Brennan, Friday, 6 November
Climate normal for this date — 60-year average.
0.34Brennan, Saturday, 7 November
Climate normal for this date — 60-year average.
0.25Brennan, Sunday, 8 November
Climate normal for this date — 60-year average.
0.28Brennan, Monday, 9 November
Climate normal for this date — 60-year average.
0.24Brennan, Tuesday, 10 November
Climate normal for this date — 60-year average.
0.31Brennan, Wednesday, 11 November
Climate normal for this date — 60-year average.
0.32Brennan, Thursday, 12 November
Climate normal for this date — 60-year average.
0.32Brennan, Friday, 13 November
Climate normal for this date — 60-year average.
0.3Brennan, Saturday, 14 November
Climate normal for this date — 60-year average.
0.36Brennan, Sunday, 15 November
Climate normal for this date — 60-year average.
0.32Brennan, Monday, 16 November
Climate normal for this date — 60-year average.
0.32Brennan, Tuesday, 17 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 Brennan, WA 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 Brennan, WA 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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