Monthly outlook for Riverside, WA: average high 59.6°, average low 40.3°. That is 5.2° above the climate normal for October. Precipitation is expected on 0 days (about 0.0 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 16 October (70.6°), the coolest 24 October (33.2°).
59.6°/40.3°
Average high / low
+5.2°
Above normal
0 / 4
Wet days / normal
0.0 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
60.4°
52.5°
+4.4°
25 October – 3 November
58.4°
45.3°
+7.3°
4 November – 13 November
at normal
40.9°
—
October records over 66 years
83.1°1 October 1992All-time high
2.8°30 October 1972All-time low
Climate normals and records are computed from the nearest reference point — Synarep (8 mi).
Fri, 1671° / 43°0
71 °
Riverside, Friday, 16 October
Overcast. High 71°, low 43°.
Pressure30.30 inHg
Wind6.5 mph S
Humidity41%
Visibility6.2 mi
Dew point37°
Sat, 1762° / 42°0
62 °
Riverside, Saturday, 17 October
Partly cloudy. High 62°, low 42°.
Pressure30.06 inHg
Wind5.4 mph W
Humidity37%
Visibility6.2 mi
Dew point36°
Sun, 1857° / 37°0
57 °
Riverside, Sunday, 18 October
Partly cloudy. High 57°, low 37°.
Pressure30.09 inHg
Wind2.6 mph N
Humidity41%
Visibility6.2 mi
Dew point28°
Mon, 1956° / 41°0
56 °
Riverside, Monday, 19 October
Overcast. High 56°, low 41°.
Pressure29.91 inHg
Wind2.4 mph N
Humidity44%
Visibility—
Dew point28°
Tue, 2062° / 41°0
62 °
Riverside, Tuesday, 20 October
Partly cloudy. High 62°, low 41°.
Pressure30.00 inHg
Wind9.9 mph N
Humidity41%
Visibility—
Dew point30°
Wed, 2160° / 40°0
60 °
Riverside, Wednesday, 21 October
Partly cloudy. High 60°, low 40°.
Pressure29.88 inHg
Wind7.5 mph S
Humidity52%
Visibility—
Dew point34°
Thu, 2261° / 40°0
61 °
Riverside, Thursday, 22 October
Overcast. High 61°, low 40°.
Pressure29.85 inHg
Wind8.1 mph S
Humidity48%
Visibility—
Dew point34°
Fri, 2356° / 35°0
56 °
Riverside, Friday, 23 October
Clear. High 56°, low 35°.
Pressure30.36 inHg
Wind7.3 mph NE
Humidity44%
Visibility—
Dew point26°
Sat, 2453° / 33°0
53 °
Riverside, Saturday, 24 October
Partly cloudy. High 53°, low 33°.
Pressure30.62 inHg
Wind8.7 mph S
Humidity39%
Visibility—
Dew point21°
Sun, 2556° / 42°0
56 °
Riverside, Sunday, 25 October
Overcast. High 56°, low 42°.
Pressure30.39 inHg
Wind6.2 mph N
Humidity38%
Visibility—
Dew point26°
Mon, 2658° / 39°0
58 °
Riverside, Monday, 26 October
Clear. High 58°, low 39°.
Pressure30.50 inHg
Wind6.2 mph N
Humidity58%
Visibility—
Dew point35°
Tue, 2758° / 41°0
58 °
Riverside, Tuesday, 27 October
Overcast. High 58°, low 41°.
Pressure30.27 inHg
Wind9.4 mph S
Humidity52%
Visibility—
Dew point34°
Wed, 2857° / 44°0
57 °
Riverside, Wednesday, 28 October
Overcast. High 57°, low 44°.
Pressure30.03 inHg
Wind4.9 mph S
Humidity49%
Visibility—
Dew point34°
Thu, 2962° / 46°0
62 °
Riverside, Thursday, 29 October
Overcast. High 62°, low 46°.
Pressure30.15 inHg
Wind5.1 mph S
Humidity48%
Visibility—
Dew point35°
Fri, 3059° / 43°0
59 °
Riverside, Friday, 30 October
Overcast. High 59°, low 43°.
Pressure30.00 inHg
Wind7.9 mph S
Humidity55%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3145° / 31°0.08
45 °
Riverside, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high45°
Average low31°
Average precipitation0.08 in
Chance of precipitation33%
Record high55° (1967)
Record low6° (1984)
Sun, 0144° / 30°0.08
44 °
Riverside, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.08 in
Chance of precipitation30%
Record high55° (1987)
Record low15° (1984)
Mon, 0244° / 30°0.07
44 °
Riverside, Monday, 2 November
Climate normal for this date — 60-year average.
Average high44°
Average low30°
Average precipitation0.07 in
Chance of precipitation30%
Record high56° (2018)
Record low8° (1994)
Tue, 0343° / 30°0.06
43 °
Riverside, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high43°
Average low30°
Average precipitation0.06 in
Chance of precipitation33%
Record high55° (1975)
Record low-2° (1994)
Wed, 0443° / 31°0.09
43 °
Riverside, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high43°
Average low31°
Average precipitation0.09 in
Chance of precipitation37%
Record high56° (1975)
Record low13° (1961)
Thu, 0542° / 29°0.07
42 °
Riverside, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.07 in
Chance of precipitation40%
Record high55° (1987)
Record low1° (1994)
Fri, 0642° / 29°0.1
42 °
Riverside, Friday, 6 November
Climate normal for this date — 60-year average.
Average high42°
Average low29°
Average precipitation0.1 in
Chance of precipitation45%
Record high54° (1987)
Record low10° (2017)
Sat, 0741° / 29°0.1
41 °
Riverside, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high41°
Average low29°
Average precipitation0.1 in
Chance of precipitation38%
Record high53° (1965)
Record low8° (2017)
Sun, 0841° / 28°0.07
41 °
Riverside, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high41°
Average low28°
Average precipitation0.07 in
Chance of precipitation28%
Record high55° (2016)
Record low12° (1984)
Mon, 0940° / 29°0.08
40 °
Riverside, Monday, 9 November
Climate normal for this date — 60-year average.
Average high40°
Average low29°
Average precipitation0.08 in
Chance of precipitation35%
Record high54° (1989)
Record low11° (2022)
Tue, 1040° / 28°0.07
40 °
Riverside, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.07 in
Chance of precipitation30%
Record high54° (2016)
Record low-2° (2000)
Wed, 1140° / 28°0.08
40 °
Riverside, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.08 in
Chance of precipitation40%
Record high53° (1990)
Record low-3° (2000)
Thu, 1240° / 28°0.07
40 °
Riverside, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.07 in
Chance of precipitation38%
Record high52° (1999)
Record low9° (2022)
Fri, 1340° / 28°0.11
40 °
Riverside, Friday, 13 November
Climate normal for this date — 60-year average.
Average high40°
Average low28°
Average precipitation0.11 in
Chance of precipitation40%
Record high51° (1967)
Record low2° (1994)
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 Riverside, 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 Riverside, 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.