As of 02:04 PDT

Weather in Byron, WA

49°Current weather

Byron, Sunday, 11 October, 02:04

Clear. Feels like 48°. High 65°, low 40°.

Pressure29.83 inHg
Wind4 mph W
Humidity66%
Visibility6.2 mi
Dew point37°

Monthly outlook for Byron, WA: average high 68.1°, average low 47.5°. That is 2.3° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 2 days and 0.4 inches. The warmest day looks like 17 October (76.3°), the coolest 12 October (34.4°).

68.1°/47.5°
Average high / low
+2.3°
Above normal
0 / 2
Wet days / normal
0.0 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
11 October – 20 October70.1°65.4°+2.6°
21 October – 30 October64.7°59.8°+2.7°
31 October – 9 Novemberat normal54.5°—

October records over 66 years

90.3°6 October 2014All-time high
21.6°30 October 2019All-time low

Climate normals and records are computed from the nearest reference point — Prosser (5 mi).

Mon, 1262° / 34°0Clear
62 °Clear

Byron, Monday, 12 October

Clear. High 62°, low 34°.

Pressure30.06 inHg
Wind2.7 mph N
Humidity35%
Visibility6.2 mi
Dew point27°
Tue, 1368° / 43°0Clear
68 °Clear

Byron, Tuesday, 13 October

Clear. High 68°, low 43°.

Pressure30.12 inHg
Wind1.6 mph W
Humidity35%
Visibility6.2 mi
Dew point29°
Wed, 1472° / 50°0Clear
72 °Clear

Byron, Wednesday, 14 October

Clear. High 72°, low 50°.

Pressure30.21 inHg
Wind1.8 mph W
Humidity31%
Visibility6.2 mi
Dew point32°
Thu, 1575° / 54°0Clear
75 °Clear

Byron, Thursday, 15 October

Clear. High 75°, low 54°.

Pressure30.39 inHg
Wind3.9 mph NE
Humidity34%
Visibility—
Dew point37°
Fri, 1676° / 53°0Clear
76 °Clear

Byron, Friday, 16 October

Clear. High 76°, low 53°.

Pressure30.21 inHg
Wind4.1 mph E
Humidity32%
Visibility—
Dew point35°
Sat, 1776° / 53°0Overcast
76 °Overcast

Byron, Saturday, 17 October

Overcast. High 76°, low 53°.

Pressure30.09 inHg
Wind7 mph W
Humidity34%
Visibility—
Dew point35°
Sun, 1873° / 53°0Clear
73 °Clear

Byron, Sunday, 18 October

Clear. High 73°, low 53°.

Pressure30.03 inHg
Wind13.6 mph SW
Humidity46%
Visibility—
Dew point42°
Mon, 1968° / 51°0Clear
68 °Clear

Byron, Monday, 19 October

Clear. High 68°, low 51°.

Pressure30.09 inHg
Wind17.3 mph NW
Humidity37%
Visibility—
Dew point37°
Tue, 2065° / 47°0Overcast
65 °Overcast

Byron, Tuesday, 20 October

Overcast. High 65°, low 47°.

Pressure30.12 inHg
Wind6 mph W
Humidity43%
Visibility—
Dew point33°
Wed, 2161° / 44°0Partly cloudy
61 °Partly cloudy

Byron, Wednesday, 21 October

Partly cloudy. High 61°, low 44°.

Pressure30.12 inHg
Wind8 mph NE
Humidity49%
Visibility—
Dew point35°
Thu, 2264° / 50°0Overcast
64 °Overcast

Byron, Thursday, 22 October

Overcast. High 64°, low 50°.

Pressure29.88 inHg
Wind5.9 mph NW
Humidity33%
Visibility—
Dew point29°
Fri, 2364° / 46°0Partly cloudy
64 °Partly cloudy

Byron, Friday, 23 October

Partly cloudy. High 64°, low 46°.

Pressure30.27 inHg
Wind3.9 mph NE
Humidity45%
Visibility—
Dew point34°
Sat, 2465° / 47°0Clear
65 °Clear

Byron, Saturday, 24 October

Clear. High 65°, low 47°.

Pressure30.39 inHg
Wind6.5 mph NE
Humidity42%
Visibility—
Dew point34°
Sun, 2567° / 48°0Partly cloudy
67 °Partly cloudy

Byron, Sunday, 25 October

Partly cloudy. High 67°, low 48°.

Pressure30.30 inHg
Wind5.6 mph N
Humidity38%
Visibility—
Dew point33°
Mon, 2667° / 47°0Clear
67 °Clear

Byron, Monday, 26 October

Clear. High 67°, low 47°.

Pressure30.12 inHg
Wind4.1 mph NW
Humidity36%
Visibility—
Dew point31°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2758° / 40°0.05Climate normal
58 °Climate normal

Byron, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high58°
Average low40°
Average precipitation0.05 in
Chance of precipitation18%
Record high76° (2003)
Record low30° (2020)
Wed, 2857° / 40°0.04Climate normal
57 °Climate normal

Byron, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high57°
Average low40°
Average precipitation0.04 in
Chance of precipitation30%
Record high73° (2003)
Record low29° (2023)
Thu, 2957° / 40°0.05Climate normal
57 °Climate normal

Byron, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high57°
Average low40°
Average precipitation0.05 in
Chance of precipitation25%
Record high74° (1965)
Record low24° (1971)
Fri, 3056° / 39°0.04Climate normal
56 °Climate normal

Byron, Friday, 30 October

Climate normal for this date — 60-year average.

Average high56°
Average low39°
Average precipitation0.04 in
Chance of precipitation23%
Record high71° (1967)
Record low22° (2019)
Sat, 3156° / 40°0.05Climate normal
56 °Climate normal

Byron, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high56°
Average low40°
Average precipitation0.05 in
Chance of precipitation22%
Record high72° (1967)
Record low23° (2006)
Sun, 0155° / 39°0.05Climate normal
55 °Climate normal

Byron, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high55°
Average low39°
Average precipitation0.05 in
Chance of precipitation28%
Record high68° (1965)
Record low21° (2002)
Mon, 0255° / 39°0.03Climate normal
55 °Climate normal

Byron, Monday, 2 November

Climate normal for this date — 60-year average.

Average high55°
Average low39°
Average precipitation0.03 in
Chance of precipitation17%
Record high67° (1993)
Record low23° (2002)
Tue, 0356° / 39°0.02Climate normal
56 °Climate normal

Byron, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high56°
Average low39°
Average precipitation0.02 in
Chance of precipitation17%
Record high71° (1983)
Record low24° (2002)
Wed, 0456° / 40°0.06Climate normal
56 °Climate normal

Byron, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high56°
Average low40°
Average precipitation0.06 in
Chance of precipitation27%
Record high70° (2020)
Record low26° (2003)
Thu, 0555° / 39°0.04Climate normal
55 °Climate normal

Byron, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high55°
Average low39°
Average precipitation0.04 in
Chance of precipitation23%
Record high69° (2012)
Record low22° (2003)
Fri, 0654° / 38°0.05Climate normal
54 °Climate normal

Byron, Friday, 6 November

Climate normal for this date — 60-year average.

Average high54°
Average low38°
Average precipitation0.05 in
Chance of precipitation28%
Record high70° (2006)
Record low23° (2003)
Sat, 0754° / 38°0.06Climate normal
54 °Climate normal

Byron, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high54°
Average low38°
Average precipitation0.06 in
Chance of precipitation27%
Record high71° (1978)
Record low22° (1973)
Sun, 0852° / 37°0.04Climate normal
52 °Climate normal

Byron, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high52°
Average low37°
Average precipitation0.04 in
Chance of precipitation25%
Record high64° (1995)
Record low28° (2003)
Mon, 0952° / 37°0.03Climate normal
52 °Climate normal

Byron, Monday, 9 November

Climate normal for this date — 60-year average.

Average high52°
Average low37°
Average precipitation0.03 in
Chance of precipitation18%
Record high66° (2016)
Record low24° (2020)

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 Byron, 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 Byron, 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.