As of 04:11 PDT

Weather in Brennan, WA

45°Current weather

Brennan, Thursday, 22 October, 04:11

Overcast. Feels like 45°. High 57°, low 43°.

Pressure29.88 inHg
Wind0.4 mph N
Humidity96%
Visibility<0.1 mi
Dew point44°

Monthly outlook for Brennan, WA: average high 53.8°, average low 44.1°. That is 0.7° above the climate normal for October. Precipitation is expected on 6 days (about 1.1 inches), against a normal of 9 days and 4.4 inches. The warmest day looks like 4 November (58°), the coolest 23 October (37°).

53.8°/44.1°
Average high / low
+0.7°
Above normal
6 / 9
Wet days / normal
1.1 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
22 October – 31 October53.1°53.4°-0.2°
1 November – 10 November55°50.7°+2.4°
11 November – 20 Novemberat normal47.8°—

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).

Fri, 2357° / 37°0Mostly clear
57 °Mostly clear

Brennan, Friday, 23 October

Mostly clear. High 57°, low 37°.

Pressure30.33 inHg
Wind2 mph NW
Humidity83%
Visibility6.2 mi
Dew point46°
Sat, 2449° / 39°0.03Light rain
49 °Light rain

Brennan, Saturday, 24 October

Light rain. High 49°, low 39°.

Pressure30.21 inHg
Wind1.9 mph N
Humidity87%
Visibility2.0 mi
Dew point44°
Sun, 2554° / 46°0.23Light rain
54 °Light rain

Brennan, Sunday, 25 October

Light rain. High 54°, low 46°.

Pressure29.97 inHg
Wind11.3 mph NE
Humidity86%
Visibility6.2 mi
Dew point46°
Mon, 2653° / 46°0.07Light rain
53 °Light rain

Brennan, Monday, 26 October

Light rain. High 53°, low 46°.

Pressure30.03 inHg
Wind8.5 mph NE
Humidity90%
Visibility—
Dew point46°
Tue, 2754° / 40°0Overcast
54 °Overcast

Brennan, Tuesday, 27 October

Overcast. High 54°, low 40°.

Pressure30.21 inHg
Wind3.8 mph SW
Humidity92%
Visibility—
Dew point46°
Wed, 2854° / 42°0Clear
54 °Clear

Brennan, Wednesday, 28 October

Clear. High 54°, low 42°.

Pressure30.21 inHg
Wind3.9 mph W
Humidity64%
Visibility—
Dew point37°
Thu, 2953° / 41°0Clear
53 °Clear

Brennan, Thursday, 29 October

Clear. High 53°, low 41°.

Pressure30.09 inHg
Wind4.3 mph W
Humidity64%
Visibility—
Dew point37°
Fri, 3048° / 42°0Partly cloudy
48 °Partly cloudy

Brennan, Friday, 30 October

Partly cloudy. High 48°, low 42°.

Pressure30.06 inHg
Wind3.6 mph E
Humidity82%
Visibility—
Dew point41°
Sat, 3152° / 43°0Overcast
52 °Overcast

Brennan, Saturday, 31 October

Overcast. High 52°, low 43°.

Pressure30.06 inHg
Wind5.2 mph NW
Humidity70%
Visibility—
Dew point40°
Sun, 0154° / 42°0Overcast
54 °Overcast

Brennan, Sunday, 1 November

Overcast. High 54°, low 42°.

Pressure29.91 inHg
Wind5 mph NW
Humidity62%
Visibility—
Dew point35°
Mon, 0257° / 44°0Clear
57 °Clear

Brennan, Monday, 2 November

Clear. High 57°, low 44°.

Pressure29.97 inHg
Wind2.9 mph NE
Humidity60%
Visibility—
Dew point37°
Tue, 0353° / 46°0.21Rain
53 °Rain

Brennan, Tuesday, 3 November

Rain. High 53°, low 46°.

Pressure29.94 inHg
Wind4.1 mph NE
Humidity63%
Visibility—
Dew point38°
Wed, 0458° / 51°0.13Light rain
58 °Light rain

Brennan, Wednesday, 4 November

Light rain. High 58°, low 51°.

Pressure30.03 inHg
Wind11.2 mph SE
Humidity79%
Visibility—
Dew point48°
Thu, 0554° / 52°0.22Light rain
54 °Light rain

Brennan, Thursday, 5 November

Light rain. High 54°, low 52°.

Pressure29.80 inHg
Wind16.4 mph SE
Humidity87%
Visibility—
Dew point49°
Fri, 0654° / 51°0.23Light rain
54 °Light rain

Brennan, Friday, 6 November

Light rain. High 54°, low 51°.

Pressure29.77 inHg
Wind9.1 mph SE
Humidity91%
Visibility—
Dew point50°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sun, 1549° / 40°0.36Climate normal
49 °Climate normal

Brennan, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high49°
Average low40°
Average precipitation0.36 in
Chance of precipitation70%
Record high59° (2001)
Record low30° (1961)
Mon, 1647° / 40°0.32Climate normal
47 °Climate normal

Brennan, Monday, 16 November

Climate normal for this date — 60-year average.

Average high47°
Average low40°
Average precipitation0.32 in
Chance of precipitation70%
Record high58° (1965)
Record low28° (1968)
Tue, 1747° / 38°0.32Climate normal
47 °Climate normal

Brennan, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high47°
Average low38°
Average precipitation0.32 in
Chance of precipitation72%
Record high58° (1967)
Record low25° (1994)
Wed, 1846° / 38°0.24Climate normal
46 °Climate normal

Brennan, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high46°
Average low38°
Average precipitation0.24 in
Chance of precipitation62%
Record high55° (1965)
Record low26° (1985)
Thu, 1946° / 38°0.34Climate normal
46 °Climate normal

Brennan, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high46°
Average low38°
Average precipitation0.34 in
Chance of precipitation72%
Record high59° (1987)
Record low24° (2011)
Fri, 2047° / 38°0.3Climate normal
47 °Climate normal

Brennan, Friday, 20 November

Climate normal for this date — 60-year average.

Average high47°
Average low38°
Average precipitation0.3 in
Chance of precipitation60%
Record high60° (2002)
Record low24° (1985)

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.