Monthly outlook for Preston, WA: average high 61°, average low 44.7°. That is 2.3° above the climate normal for October. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 8 days and 3.1 inches. The warmest day looks like 15 October (75.8°), the coolest 18 October (37.1°).
61°/44.7°
Average high / low
+2.3°
Above normal
4 / 8
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
13 October – 22 October
59.4°
57.9°
+0.8°
23 October – 1 November
63.6°
54.1°
+5.3°
2 November – 11 November
at normal
51.5°
—
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).
Wed, 1463° / 45°0
63 °
Preston, Wednesday, 14 October
Overcast. High 63°, low 45°.
Pressure30.30 inHg
Wind1.6 mph SW
Humidity58%
Visibility6.2 mi
Dew point47°
Thu, 1576° / 41°0
76 °
Preston, Thursday, 15 October
Clear. High 76°, low 41°.
Pressure30.30 inHg
Wind2.6 mph N
Humidity61%
Visibility6.2 mi
Dew point52°
Fri, 1675° / 53°0
75 °
Preston, Friday, 16 October
Partly cloudy. High 75°, low 53°.
Pressure30.12 inHg
Wind2.2 mph SW
Humidity42%
Visibility6.2 mi
Dew point48°
Sat, 1756° / 45°0.17
56 °
Preston, Saturday, 17 October
Light rain. High 56°, low 45°.
Pressure30.12 inHg
Wind7.4 mph S
Humidity92%
Visibility—
Dew point53°
Sun, 1858° / 37°0
58 °
Preston, Sunday, 18 October
Mostly clear. High 58°, low 37°.
Pressure30.00 inHg
Wind4.8 mph SE
Humidity67%
Visibility—
Dew point40°
Mon, 1948° / 45°0.41
48 °
Preston, Monday, 19 October
Light rain. High 48°, low 45°.
Pressure29.71 inHg
Wind4.6 mph S
Humidity96%
Visibility—
Dew point46°
Tue, 2053° / 42°0.09
53 °
Preston, Tuesday, 20 October
Light rain. High 53°, low 42°.
Pressure29.97 inHg
Wind3.7 mph SE
Humidity89%
Visibility—
Dew point44°
Wed, 2155° / 41°0.02
55 °
Preston, Wednesday, 21 October
Light rain. High 55°, low 41°.
Pressure30.09 inHg
Wind4.3 mph SE
Humidity80%
Visibility—
Dew point43°
Thu, 2252° / 45°0.55
52 °
Preston, Thursday, 22 October
Rain. High 52°, low 45°.
Pressure30.03 inHg
Wind4.8 mph SW
Humidity94%
Visibility—
Dew point47°
Fri, 2356° / 44°0.03
56 °
Preston, Friday, 23 October
Light rain. High 56°, low 44°.
Pressure30.47 inHg
Wind3.5 mph SE
Humidity81%
Visibility—
Dew point45°
Sat, 2455° / 43°0
55 °
Preston, Saturday, 24 October
Overcast. High 55°, low 43°.
Pressure30.53 inHg
Wind3.9 mph E
Humidity52%
Visibility—
Dew point36°
Sun, 2560° / 44°0
60 °
Preston, Sunday, 25 October
Overcast. High 60°, low 44°.
Pressure30.53 inHg
Wind5.1 mph N
Humidity59%
Visibility—
Dew point40°
Mon, 2674° / 48°0
74 °
Preston, Monday, 26 October
Overcast. High 74°, low 48°.
Pressure30.30 inHg
Wind6 mph E
Humidity48%
Visibility—
Dew point43°
Tue, 2773° / 50°0
73 °
Preston, Tuesday, 27 October
Mostly clear. High 73°, low 50°.
Pressure30.24 inHg
Wind5.1 mph E
Humidity44%
Visibility—
Dew point42°
Wed, 2864° / 50°0
64 °
Preston, Wednesday, 28 October
Clear. High 64°, low 50°.
Pressure30.09 inHg
Wind3.6 mph SE
Humidity46%
Visibility—
Dew point41°
From day 17 onward the outlook is built from 60-year climate statistics
Thu, 2953° / 41°0.19
53 °
Preston, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.19 in
Chance of precipitation53%
Record high69° (1962)
Record low26° (1991)
Fri, 3053° / 41°0.21
53 °
Preston, Friday, 30 October
Climate normal for this date — 60-year average.
Average high53°
Average low41°
Average precipitation0.21 in
Chance of precipitation55%
Record high62° (1987)
Record low27° (1991)
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)
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.