Monthly outlook for Preston, WA: average high 57.2°, average low 41.7°. That is 0.6° above the climate normal for October. Precipitation is expected on 6 days (about 1.8 inches), against a normal of 8 days and 3.2 inches. The warmest day looks like 15 October (75.7°), the coolest 20 October (34.9°).
57.2°/41.7°
Average high / low
+0.6°
Above normal
6 / 8
Wet days / normal
1.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
59.4°
57.4°
+1.1°
25 October – 3 November
53.5°
53.4°
+0.1°
4 November – 13 November
at normal
51°
—
October records over 66 years
86.7°16 October 2022All-time high
22.8°28 October 1971All-time low
Climate normals and records are computed from the nearest reference point — Bellevue (12 mi).
Fri, 1672° / 51°0
72 °
Preston, Friday, 16 October
Overcast. High 72°, low 51°.
Pressure30.15 inHg
Wind3.1 mph SE
Humidity36%
Visibility6.2 mi
Dew point45°
Sat, 1759° / 44°0.24
59 °
Preston, Saturday, 17 October
Rain. High 59°, low 44°.
Pressure30.27 inHg
Wind4.1 mph NE
Humidity86%
Visibility6.2 mi
Dew point51°
Sun, 1856° / 35°0
56 °
Preston, Sunday, 18 October
Overcast. High 56°, low 35°.
Pressure30.12 inHg
Wind3.5 mph N
Humidity65%
Visibility6.2 mi
Dew point41°
Mon, 1957° / 40°0.02
57 °
Preston, Monday, 19 October
Light rain. High 57°, low 40°.
Pressure29.88 inHg
Wind2.6 mph SW
Humidity60%
Visibility6.2 mi
Dew point42°
Tue, 2055° / 35°0
55 °
Preston, Tuesday, 20 October
Overcast. High 55°, low 35°.
Pressure30.12 inHg
Wind6.2 mph N
Humidity83%
Visibility—
Dew point42°
Wed, 2161° / 37°0
61 °
Preston, Wednesday, 21 October
Mostly clear. High 61°, low 37°.
Pressure30.00 inHg
Wind4.9 mph SE
Humidity59%
Visibility—
Dew point38°
Thu, 2253° / 46°0.16
53 °
Preston, Thursday, 22 October
Light rain. High 53°, low 46°.
Pressure30.03 inHg
Wind4.1 mph S
Humidity61%
Visibility—
Dew point39°
Fri, 2351° / 40°0.19
51 °
Preston, Friday, 23 October
Rain. High 51°, low 40°.
Pressure30.36 inHg
Wind5 mph SW
Humidity86%
Visibility—
Dew point42°
Sat, 2453° / 39°0
53 °
Preston, Saturday, 24 October
Overcast. High 53°, low 39°.
Pressure30.56 inHg
Wind4.1 mph NW
Humidity73%
Visibility—
Dew point40°
Sun, 2549° / 39°0
49 °
Preston, Sunday, 25 October
Overcast. High 49°, low 39°.
Pressure30.47 inHg
Wind3.6 mph E
Humidity74%
Visibility—
Dew point38°
Mon, 2653° / 47°0.2
53 °
Preston, Monday, 26 October
Light rain. High 53°, low 47°.
Pressure30.18 inHg
Wind4.7 mph S
Humidity93%
Visibility—
Dew point49°
Tue, 2755° / 50°0.71
55 °
Preston, Tuesday, 27 October
Rain. High 55°, low 50°.
Pressure29.94 inHg
Wind11.6 mph SW
Humidity98%
Visibility—
Dew point51°
Wed, 2852° / 42°0.26
52 °
Preston, Wednesday, 28 October
Light rain. High 52°, low 42°.
Pressure30.39 inHg
Wind5.8 mph SW
Humidity93%
Visibility—
Dew point47°
Thu, 2954° / 38°0
54 °
Preston, Thursday, 29 October
Clear. High 54°, low 38°.
Pressure30.47 inHg
Wind4.5 mph N
Humidity75%
Visibility—
Dew point39°
Fri, 3057° / 37°0
57 °
Preston, Friday, 30 October
Mostly clear. High 57°, low 37°.
Pressure30.24 inHg
Wind3.8 mph N
Humidity60%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3152° / 41°0.27
52 °
Preston, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.27 in
Chance of precipitation65%
Record high64° (1964)
Record low26° (1984)
Sun, 0153° / 41°0.24
53 °
Preston, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.24 in
Chance of precipitation53%
Record high65° (1969)
Record low28° (1995)
Mon, 0253° / 41°0.2
53 °
Preston, Monday, 2 November
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.2 in
Chance of precipitation58%
Record high67° (1962)
Record low28° (1973)
Tue, 0353° / 42°0.27
53 °
Preston, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.27 in
Chance of precipitation62%
Record high65° (2010)
Record low28° (2003)
Wed, 0453° / 42°0.33
53 °
Preston, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high53°
Average low42°
Average precipitation0.33 in
Chance of precipitation58%
Record high66° (1980)
Record low28° (2003)
Thu, 0552° / 41°0.19
52 °
Preston, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high52°
Average low41°
Average precipitation0.19 in
Chance of precipitation58%
Record high64° (1997)
Record low25° (1971)
Fri, 0651° / 41°0.3
51 °
Preston, Friday, 6 November
Climate normal for this date — 60-year average.
Average high51°
Average low41°
Average precipitation0.3 in
Chance of precipitation62%
Record high58° (1967)
Record low26° (2003)
Sat, 0751° / 42°0.26
51 °
Preston, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high51°
Average low42°
Average precipitation0.26 in
Chance of precipitation63%
Record high61° (2016)
Record low29° (2003)
Sun, 0851° / 40°0.19
51 °
Preston, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.19 in
Chance of precipitation53%
Record high65° (2016)
Record low30° (1966)
Mon, 0950° / 40°0.24
50 °
Preston, Monday, 9 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.24 in
Chance of precipitation67%
Record high62° (2025)
Record low29° (1982)
Tue, 1051° / 40°0.2
51 °
Preston, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.2 in
Chance of precipitation47%
Record high64° (2016)
Record low26° (1986)
Wed, 1151° / 40°0.24
51 °
Preston, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high51°
Average low40°
Average precipitation0.24 in
Chance of precipitation57%
Record high61° (1996)
Record low24° (1985)
Thu, 1250° / 40°0.28
50 °
Preston, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.28 in
Chance of precipitation65%
Record high58° (1990)
Record low24° (1978)
Fri, 1350° / 40°0.3
50 °
Preston, Friday, 13 November
Climate normal for this date — 60-year average.
Average high50°
Average low40°
Average precipitation0.3 in
Chance of precipitation60%
Record high62° (1967)
Record low25° (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 Preston, 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 Preston, 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.