As of 15:15 PDT

Weather in Brennan, WA

70°Current weather

Brennan, Friday, 16 October, 15:15

Mostly clear. Feels like 69°. High 70°, low 46°.

Pressure30.06 inHg
Wind1 mph E
Humidity52%
Visibility6.2 mi
Dew point52°

Monthly outlook for Brennan, WA: average high 56.4°, average low 42.9°. That is 1.1° above the climate normal for October. Precipitation is expected on 4 days (about 1.1 inches), against a normal of 9 days and 4.0 inches. The warmest day looks like 16 October (70.1°), the coolest 21 October (37.5°).

56.4°/42.9°
Average high / low
+1.1°
Above normal
4 / 9
Wet days / normal
1.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
16 October – 25 October58.2°55.6°+1.4°
26 October – 4 November53.4°52.1°+0.7°
5 November – 14 Novemberat normal49.6°—

October records over 66 years

81.1°1 October 1987All-time high
21.6°31 October 1984All-time low

Climate normals and records are computed from the nearest reference point — Bellingham (6 mi).

Sat, 1760° / 44°0.17Rain
60 °Rain

Brennan, Saturday, 17 October

Rain. High 60°, low 44°.

Pressure30.21 inHg
Wind9.4 mph SW
Humidity67%
Visibility6.2 mi
Dew point48°
Sun, 1857° / 38°0Overcast
57 °Overcast

Brennan, Sunday, 18 October

Overcast. High 57°, low 38°.

Pressure30.18 inHg
Wind1.6 mph N
Humidity76%
Visibility2.2 mi
Dew point47°
Mon, 1958° / 43°0Partly cloudy
58 °Partly cloudy

Brennan, Monday, 19 October

Partly cloudy. High 58°, low 43°.

Pressure29.94 inHg
Wind3.7 mph W
Humidity78%
Visibility6.2 mi
Dew point49°
Tue, 2060° / 40°0Partly cloudy
60 °Partly cloudy

Brennan, Tuesday, 20 October

Partly cloudy. High 60°, low 40°.

Pressure30.09 inHg
Wind2 mph NW
Humidity80%
Visibility0.5 mi
Dew point47°
Wed, 2159° / 37°0Mostly clear
59 °Mostly clear

Brennan, Wednesday, 21 October

Mostly clear. High 59°, low 37°.

Pressure30.03 inHg
Wind3 mph E
Humidity87%
Visibility—
Dew point45°
Thu, 2250° / 44°0.05Light rain
50 °Light rain

Brennan, Thursday, 22 October

Light rain. High 50°, low 44°.

Pressure30.00 inHg
Wind5.6 mph S
Humidity79%
Visibility—
Dew point43°
Fri, 2354° / 43°0Mostly clear
54 °Mostly clear

Brennan, Friday, 23 October

Mostly clear. High 54°, low 43°.

Pressure30.30 inHg
Wind6.2 mph NW
Humidity75%
Visibility—
Dew point41°
Sat, 2456° / 40°0Clear
56 °Clear

Brennan, Saturday, 24 October

Clear. High 56°, low 40°.

Pressure30.27 inHg
Wind6.1 mph NW
Humidity54%
Visibility—
Dew point32°
Sun, 2558° / 41°0Clear
58 °Clear

Brennan, Sunday, 25 October

Clear. High 58°, low 41°.

Pressure30.09 inHg
Wind8.1 mph NW
Humidity49%
Visibility—
Dew point31°
Mon, 2657° / 41°0Overcast
57 °Overcast

Brennan, Monday, 26 October

Overcast. High 57°, low 41°.

Pressure30.00 inHg
Wind7 mph NW
Humidity46%
Visibility—
Dew point29°
Tue, 2754° / 44°0Overcast
54 °Overcast

Brennan, Tuesday, 27 October

Overcast. High 54°, low 44°.

Pressure29.71 inHg
Wind5.4 mph SE
Humidity46%
Visibility—
Dew point29°
Wed, 2853° / 43°0Overcast
53 °Overcast

Brennan, Wednesday, 28 October

Overcast. High 53°, low 43°.

Pressure29.88 inHg
Wind5.3 mph SE
Humidity64%
Visibility—
Dew point37°
Thu, 2953° / 46°0Overcast
53 °Overcast

Brennan, Thursday, 29 October

Overcast. High 53°, low 46°.

Pressure30.15 inHg
Wind3.1 mph SE
Humidity78%
Visibility—
Dew point44°
Fri, 3051° / 48°0.24Light rain
51 °Light rain

Brennan, Friday, 30 October

Light rain. High 51°, low 48°.

Pressure30.12 inHg
Wind11.1 mph S
Humidity86%
Visibility—
Dew point46°
Sat, 3154° / 49°0.69Rain
54 °Rain

Brennan, Saturday, 31 October

Rain. High 54°, low 49°.

Pressure29.74 inHg
Wind21.1 mph S
Humidity94%
Visibility—
Dew point49°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0152° / 41°0.25Climate normal
52 °Climate normal

Brennan, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high52°
Average low41°
Average precipitation0.25 in
Chance of precipitation50%
Record high65° (1969)
Record low31° (1984)
Mon, 0252° / 41°0.27Climate normal
52 °Climate normal

Brennan, Monday, 2 November

Climate normal for this date — 60-year average.

Average high52°
Average low41°
Average precipitation0.27 in
Chance of precipitation58%
Record high65° (1962)
Record low31° (1961)
Tue, 0351° / 42°0.33Climate normal
51 °Climate normal

Brennan, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high51°
Average low42°
Average precipitation0.33 in
Chance of precipitation63%
Record high64° (2010)
Record low29° (2017)
Wed, 0452° / 42°0.38Climate normal
52 °Climate normal

Brennan, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high52°
Average low42°
Average precipitation0.38 in
Chance of precipitation62%
Record high65° (1980)
Record low30° (2017)
Thu, 0551° / 41°0.22Climate normal
51 °Climate normal

Brennan, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high51°
Average low41°
Average precipitation0.22 in
Chance of precipitation65%
Record high64° (1980)
Record low28° (1971)
Fri, 0650° / 41°0.35Climate normal
50 °Climate normal

Brennan, Friday, 6 November

Climate normal for this date — 60-year average.

Average high50°
Average low41°
Average precipitation0.35 in
Chance of precipitation62%
Record high59° (2014)
Record low28° (2003)
Sat, 0750° / 42°0.34Climate normal
50 °Climate normal

Brennan, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high50°
Average low42°
Average precipitation0.34 in
Chance of precipitation73%
Record high59° (1962)
Record low29° (2003)
Sun, 0850° / 41°0.25Climate normal
50 °Climate normal

Brennan, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high50°
Average low41°
Average precipitation0.25 in
Chance of precipitation60%
Record high67° (2016)
Record low28° (2022)
Mon, 0950° / 40°0.28Climate normal
50 °Climate normal

Brennan, Monday, 9 November

Climate normal for this date — 60-year average.

Average high50°
Average low40°
Average precipitation0.28 in
Chance of precipitation60%
Record high64° (2025)
Record low28° (2022)
Tue, 1050° / 40°0.24Climate normal
50 °Climate normal

Brennan, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high50°
Average low40°
Average precipitation0.24 in
Chance of precipitation53%
Record high64° (2025)
Record low28° (1966)
Wed, 1149° / 40°0.31Climate normal
49 °Climate normal

Brennan, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high49°
Average low40°
Average precipitation0.31 in
Chance of precipitation60%
Record high60° (1996)
Record low25° (1985)
Thu, 1249° / 40°0.32Climate normal
49 °Climate normal

Brennan, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high49°
Average low40°
Average precipitation0.32 in
Chance of precipitation68%
Record high59° (1990)
Record low28° (1978)
Fri, 1349° / 40°0.32Climate normal
49 °Climate normal

Brennan, Friday, 13 November

Climate normal for this date — 60-year average.

Average high49°
Average low40°
Average precipitation0.32 in
Chance of precipitation65%
Record high63° (1967)
Record low26° (1982)
Sat, 1448° / 39°0.3Climate normal
48 °Climate normal

Brennan, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high48°
Average low39°
Average precipitation0.3 in
Chance of precipitation63%
Record high61° (1999)
Record low28° (1982)

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.