As of 02:48 PDT

Weather in Brennan, WA

52°Current weather

Brennan, Wednesday, 14 October, 02:48

Overcast. Feels like 51°. High 65°, low 52°.

Pressure30.24 inHg
Wind3.4 mph N
Humidity93%
Visibility2.7 mi
Dew point50°

Monthly outlook for Brennan, WA: average high 57°, average low 45.2°. That is 1° above the climate normal for October. Precipitation is expected on 6 days (about 2.4 inches), against a normal of 8 days and 3.8 inches. The warmest day looks like 15 October (73.7°), the coolest 18 October (39.9°).

57°/45.2°
Average high / low
+1°
Above normal
6 / 8
Wet days / normal
2.4 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
14 October – 23 October60.1°56.4°+2.1°
24 October – 2 November51.8°52.7°-0.5°
3 November – 12 Novemberat normal50.2°—

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).

Thu, 1574° / 49°0Overcast
74 °Overcast

Brennan, Thursday, 15 October

Overcast. High 74°, low 49°.

Pressure30.36 inHg
Wind0.8 mph N
Humidity79%
Visibility0.9 mi
Dew point52°
Fri, 1669° / 47°0Clear
69 °Clear

Brennan, Friday, 16 October

Clear. High 69°, low 47°.

Pressure30.15 inHg
Wind1 mph SE
Humidity60%
Visibility6.2 mi
Dew point49°
Sat, 1759° / 45°0.23Rain
59 °Rain

Brennan, Saturday, 17 October

Rain. High 59°, low 45°.

Pressure30.21 inHg
Wind9.6 mph W
Humidity69%
Visibility6.2 mi
Dew point48°
Sun, 1856° / 40°0Overcast
56 °Overcast

Brennan, Sunday, 18 October

Overcast. High 56°, low 40°.

Pressure30.15 inHg
Wind5.7 mph NE
Humidity75%
Visibility—
Dew point43°
Mon, 1953° / 40°0Overcast
53 °Overcast

Brennan, Monday, 19 October

Overcast. High 53°, low 40°.

Pressure29.97 inHg
Wind4.3 mph SW
Humidity91%
Visibility—
Dew point43°
Tue, 2057° / 43°0Clear
57 °Clear

Brennan, Tuesday, 20 October

Clear. High 57°, low 43°.

Pressure30.18 inHg
Wind7.2 mph NW
Humidity60%
Visibility—
Dew point38°
Wed, 2157° / 45°0Partly cloudy
57 °Partly cloudy

Brennan, Wednesday, 21 October

Partly cloudy. High 57°, low 45°.

Pressure30.03 inHg
Wind3.4 mph W
Humidity60%
Visibility—
Dew point38°
Thu, 2253° / 46°0.01Light rain
53 °Light rain

Brennan, Thursday, 22 October

Light rain. High 53°, low 46°.

Pressure29.97 inHg
Wind7 mph SE
Humidity74%
Visibility—
Dew point44°
Fri, 2358° / 44°0Partly cloudy
58 °Partly cloudy

Brennan, Friday, 23 October

Partly cloudy. High 58°, low 44°.

Pressure30.18 inHg
Wind5.5 mph NW
Humidity72%
Visibility—
Dew point42°
Sat, 2456° / 47°0Overcast
56 °Overcast

Brennan, Saturday, 24 October

Overcast. High 56°, low 47°.

Pressure30.21 inHg
Wind5.1 mph NW
Humidity61%
Visibility—
Dew point40°
Sun, 2553° / 45°0Overcast
53 °Overcast

Brennan, Sunday, 25 October

Overcast. High 53°, low 45°.

Pressure30.18 inHg
Wind4 mph N
Humidity70%
Visibility—
Dew point41°
Mon, 2650° / 47°0.21Light rain
50 °Light rain

Brennan, Monday, 26 October

Light rain. High 50°, low 47°.

Pressure30.06 inHg
Wind5.7 mph S
Humidity95%
Visibility—
Dew point48°
Tue, 2752° / 45°0.11Light rain
52 °Light rain

Brennan, Tuesday, 27 October

Light rain. High 52°, low 45°.

Pressure30.00 inHg
Wind10.7 mph E
Humidity79%
Visibility—
Dew point42°
Wed, 2848° / 46°1.59Rain
48 °Rain

Brennan, Wednesday, 28 October

Rain. High 48°, low 46°.

Pressure29.32 inHg
Wind15.5 mph SW
Humidity97%
Visibility—
Dew point47°
Thu, 2951° / 44°0.1Light rain
51 °Light rain

Brennan, Thursday, 29 October

Light rain. High 51°, low 44°.

Pressure29.74 inHg
Wind13.2 mph S
Humidity80%
Visibility—
Dew point42°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 3052° / 42°0.27Climate normal
52 °Climate normal

Brennan, Friday, 30 October

Climate normal for this date — 60-year average.

Average high52°
Average low42°
Average precipitation0.27 in
Chance of precipitation57%
Record high61° (1987)
Record low31° (1972)
Sat, 3151° / 42°0.33Climate normal
51 °Climate normal

Brennan, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high51°
Average low42°
Average precipitation0.33 in
Chance of precipitation67%
Record high61° (1964)
Record low22° (1984)
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)

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.