Monthly outlook for Prevost, WA: average high 54.6°, average low 49.6°. That is 0.2° above the climate normal for October. Precipitation is expected on 4 days (about 0.4 inches), against a normal of 6 days and 2.1 inches. The warmest day looks like 8 October (62.7°), the coolest 23 October (44.9°).
54.6°/49.6°
Average high / low
+0.2°
Above normal
4 / 6
Wet days / normal
0.4 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
56.1°
54.8°
+0.8°
18 October – 27 October
52°
52.8°
-0.4°
28 October – 6 November
at normal
50.9°
—
October records over 66 years
73.2°16 October 2022All-time high
28.8°31 October 1984All-time low
Climate normals and records are computed from the nearest reference point — Roche Harbor (6 mi).
Fri, 0961° / 48°0.03
61 °
Prevost, Friday, 9 October
Light rain. High 61°, low 48°.
Pressure29.80 inHg
Wind6.9 mph SW
Humidity74%
Visibility6.2 mi
Dew point49°
Sat, 1058° / 51°0.11
58 °
Prevost, Saturday, 10 October
Rain. High 58°, low 51°.
Pressure29.88 inHg
Wind10.1 mph N
Humidity80%
Visibility6.2 mi
Dew point47°
Sun, 1157° / 54°0
57 °
Prevost, Sunday, 11 October
Clear. High 57°, low 54°.
Pressure30.03 inHg
Wind19.1 mph N
Humidity65%
Visibility6.2 mi
Dew point44°
Mon, 1256° / 53°0
56 °
Prevost, Monday, 12 October
Clear. High 56°, low 53°.
Pressure30.03 inHg
Wind14.9 mph NW
Humidity74%
Visibility—
Dew point45°
Tue, 1356° / 52°0.07
56 °
Prevost, Tuesday, 13 October
Light rain. High 56°, low 52°.
Pressure30.00 inHg
Wind21.2 mph S
Humidity86%
Visibility—
Dew point48°
Wed, 1453° / 50°0.01
53 °
Prevost, Wednesday, 14 October
Light rain. High 53°, low 50°.
Pressure30.03 inHg
Wind16.8 mph NW
Humidity68%
Visibility—
Dew point42°
Thu, 1553° / 48°0
53 °
Prevost, Thursday, 15 October
Partly cloudy. High 53°, low 48°.
Pressure30.45 inHg
Wind8.2 mph N
Humidity70%
Visibility—
Dew point40°
Fri, 1653° / 49°0
53 °
Prevost, Friday, 16 October
Overcast. High 53°, low 49°.
Pressure30.33 inHg
Wind9.1 mph N
Humidity62%
Visibility—
Dew point38°
Sat, 1753° / 49°0
53 °
Prevost, Saturday, 17 October
Overcast. High 53°, low 49°.
Pressure30.21 inHg
Wind6.6 mph N
Humidity69%
Visibility—
Dew point42°
Sun, 1853° / 50°0.04
53 °
Prevost, Sunday, 18 October
Light rain. High 53°, low 50°.
Pressure30.09 inHg
Wind7.5 mph SE
Humidity69%
Visibility—
Dew point42°
Mon, 1954° / 49°0
54 °
Prevost, Monday, 19 October
Overcast. High 54°, low 49°.
Pressure30.36 inHg
Wind4.5 mph S
Humidity84%
Visibility—
Dew point47°
Tue, 2053° / 49°0
53 °
Prevost, Tuesday, 20 October
Overcast. High 53°, low 49°.
Pressure30.42 inHg
Wind5 mph N
Humidity83%
Visibility—
Dew point46°
Wed, 2152° / 49°0
52 °
Prevost, Wednesday, 21 October
Overcast. High 52°, low 49°.
Pressure30.53 inHg
Wind15.5 mph NW
Humidity80%
Visibility—
Dew point45°
Thu, 2252° / 47°0.1
52 °
Prevost, Thursday, 22 October
Light rain. High 52°, low 47°.
Pressure30.12 inHg
Wind21.9 mph NW
Humidity75%
Visibility—
Dew point42°
Fri, 2349° / 45°0
49 °
Prevost, Friday, 23 October
Clear. High 49°, low 45°.
Pressure30.18 inHg
Wind23.4 mph NW
Humidity66%
Visibility—
Dew point36°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 2453° / 47°0.13
53 °
Prevost, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high53°
Average low47°
Average precipitation0.13 in
Chance of precipitation42%
Record high58° (1982)
Record low40° (2020)
Sun, 2552° / 47°0.17
52 °
Prevost, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high52°
Average low47°
Average precipitation0.17 in
Chance of precipitation55%
Record high59° (1994)
Record low35° (2020)
Mon, 2652° / 47°0.15
52 °
Prevost, Monday, 26 October
Climate normal for this date — 60-year average.
Average high52°
Average low47°
Average precipitation0.15 in
Chance of precipitation50%
Record high58° (1965)
Record low36° (2020)
Tue, 2752° / 47°0.13
52 °
Prevost, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high52°
Average low47°
Average precipitation0.13 in
Chance of precipitation43%
Record high58° (1965)
Record low35° (1971)
Wed, 2851° / 47°0.2
51 °
Prevost, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high51°
Average low47°
Average precipitation0.2 in
Chance of precipitation52%
Record high59° (1968)
Record low37° (1971)
Thu, 2951° / 46°0.13
51 °
Prevost, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high51°
Average low46°
Average precipitation0.13 in
Chance of precipitation35%
Record high61° (2017)
Record low37° (1991)
Fri, 3051° / 46°0.19
51 °
Prevost, Friday, 30 October
Climate normal for this date — 60-year average.
Average high51°
Average low46°
Average precipitation0.19 in
Chance of precipitation58%
Record high58° (2015)
Record low37° (1972)
Sat, 3151° / 46°0.23
51 °
Prevost, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high51°
Average low46°
Average precipitation0.23 in
Chance of precipitation53%
Record high58° (1964)
Record low29° (1984)
Sun, 0151° / 46°0.19
51 °
Prevost, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high51°
Average low46°
Average precipitation0.19 in
Chance of precipitation47%
Record high58° (1969)
Record low36° (1984)
Mon, 0251° / 46°0.18
51 °
Prevost, Monday, 2 November
Climate normal for this date — 60-year average.
Average high51°
Average low46°
Average precipitation0.18 in
Chance of precipitation53%
Record high58° (1970)
Record low37° (2002)
Tue, 0351° / 46°0.24
51 °
Prevost, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high51°
Average low46°
Average precipitation0.24 in
Chance of precipitation55%
Record high57° (1970)
Record low33° (2017)
Wed, 0451° / 46°0.2
51 °
Prevost, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high51°
Average low46°
Average precipitation0.2 in
Chance of precipitation53%
Record high60° (2023)
Record low35° (2017)
Thu, 0551° / 46°0.13
51 °
Prevost, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high51°
Average low46°
Average precipitation0.13 in
Chance of precipitation55%
Record high58° (2016)
Record low34° (2017)
Fri, 0650° / 46°0.23
50 °
Prevost, Friday, 6 November
Climate normal for this date — 60-year average.
Average high50°
Average low46°
Average precipitation0.23 in
Chance of precipitation57%
Record high59° (2014)
Record low35° (2017)
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 Prevost, 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 Prevost, 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.