Monthly outlook for Waterloo, OR: average high 66.3°, average low 44°. That is 1.3° above the climate normal for October. Precipitation is expected on 3 days (about 0.5 inches), against a normal of 6 days and 2.5 inches. The warmest day looks like 8 October (79.1°), the coolest 17 October (37.7°).
66.3°/44°
Average high / low
+1.3°
Above normal
3 / 6
Wet days / normal
0.5 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
7 October – 16 October
65.3°
64.8°
+0.3°
17 October – 26 October
67.9°
61.5°
+3.5°
27 October – 5 November
at normal
57.2°
—
October records over 66 years
91.4°10 October 1991All-time high
24.4°29 October 2023All-time low
Thu, 0879° / 47°0
79 °
Waterloo, Thursday, 8 October
Clear. High 79°, low 47°.
Pressure30.00 inHg
Wind4.4 mph NW
Humidity54%
Visibility6.2 mi
Dew point51°
Fri, 0963° / 48°0.05
63 °
Waterloo, Friday, 9 October
Light rain. High 63°, low 48°.
Pressure29.91 inHg
Wind6 mph SW
Humidity68%
Visibility5.0 mi
Dew point51°
Sat, 1061° / 44°0.02
61 °
Waterloo, Saturday, 10 October
Light rain. High 61°, low 44°.
Pressure29.88 inHg
Wind3 mph SW
Humidity64%
Visibility6.2 mi
Dew point44°
Sun, 1165° / 40°0
65 °
Waterloo, Sunday, 11 October
Clear. High 65°, low 40°.
Pressure29.94 inHg
Wind9.7 mph N
Humidity36%
Visibility6.2 mi
Dew point31°
Mon, 1267° / 39°0
67 °
Waterloo, Monday, 12 October
Clear. High 67°, low 39°.
Pressure30.03 inHg
Wind12.4 mph N
Humidity37%
Visibility—
Dew point31°
Tue, 1353° / 42°0.25
53 °
Waterloo, Tuesday, 13 October
Rain. High 53°, low 42°.
Pressure29.94 inHg
Wind7.6 mph SE
Humidity86%
Visibility—
Dew point43°
Wed, 1456° / 42°0.22
56 °
Waterloo, Wednesday, 14 October
Light rain. High 56°, low 42°.
Pressure30.18 inHg
Wind5.3 mph N
Humidity83%
Visibility—
Dew point45°
Thu, 1565° / 39°0
65 °
Waterloo, Thursday, 15 October
Clear. High 65°, low 39°.
Pressure30.36 inHg
Wind8.3 mph N
Humidity64%
Visibility—
Dew point39°
Fri, 1669° / 40°0
69 °
Waterloo, Friday, 16 October
Clear. High 69°, low 40°.
Pressure30.27 inHg
Wind7 mph E
Humidity40%
Visibility—
Dew point31°
Sat, 1762° / 38°0
62 °
Waterloo, Saturday, 17 October
Clear. High 62°, low 38°.
Pressure30.03 inHg
Wind5 mph SE
Humidity33%
Visibility—
Dew point24°
Sun, 1864° / 41°0
64 °
Waterloo, Sunday, 18 October
Partly cloudy. High 64°, low 41°.
Pressure30.09 inHg
Wind6.4 mph SW
Humidity33%
Visibility—
Dew point26°
Mon, 1965° / 47°0
65 °
Waterloo, Monday, 19 October
Overcast. High 65°, low 47°.
Pressure30.18 inHg
Wind4.7 mph SE
Humidity30%
Visibility—
Dew point29°
Tue, 2069° / 50°0
69 °
Waterloo, Tuesday, 20 October
Overcast. High 69°, low 50°.
Pressure30.36 inHg
Wind3.9 mph E
Humidity44%
Visibility—
Dew point38°
Wed, 2172° / 49°0
72 °
Waterloo, Wednesday, 21 October
Overcast. High 72°, low 49°.
Pressure30.39 inHg
Wind7.8 mph N
Humidity53%
Visibility—
Dew point44°
Thu, 2275° / 50°0
75 °
Waterloo, Thursday, 22 October
Overcast. High 75°, low 50°.
Pressure30.21 inHg
Wind7.6 mph NW
Humidity50%
Visibility—
Dew point44°
From day 17 onward the outlook is built from 60-year climate statistics
Fri, 2361° / 44°0.18
61 °
Waterloo, Friday, 23 October
Climate normal for this date — 60-year average.
Average high61°
Average low44°
Average precipitation0.18 in
Chance of precipitation45%
Record high77° (1965)
Record low32° (2020)
Sat, 2460° / 44°0.19
60 °
Waterloo, Saturday, 24 October
Climate normal for this date — 60-year average.
Average high60°
Average low44°
Average precipitation0.19 in
Chance of precipitation45%
Record high78° (1965)
Record low32° (2024)
Sun, 2560° / 44°0.28
60 °
Waterloo, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high60°
Average low44°
Average precipitation0.28 in
Chance of precipitation50%
Record high76° (1965)
Record low32° (1969)
Mon, 2659° / 44°0.27
59 °
Waterloo, Monday, 26 October
Climate normal for this date — 60-year average.
Average high59°
Average low44°
Average precipitation0.27 in
Chance of precipitation50%
Record high74° (1965)
Record low27° (2020)
Tue, 2759° / 42°0.26
59 °
Waterloo, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high59°
Average low42°
Average precipitation0.26 in
Chance of precipitation45%
Record high76° (1987)
Record low30° (2020)
Wed, 2858° / 43°0.3
58 °
Waterloo, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.3 in
Chance of precipitation55%
Record high74° (1962)
Record low25° (2023)
Thu, 2957° / 43°0.21
57 °
Waterloo, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high57°
Average low43°
Average precipitation0.21 in
Chance of precipitation52%
Record high72° (1962)
Record low24° (2023)
Fri, 3057° / 42°0.24
57 °
Waterloo, Friday, 30 October
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.24 in
Chance of precipitation43%
Record high70° (1967)
Record low26° (2019)
Sat, 3157° / 42°0.27
57 °
Waterloo, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.27 in
Chance of precipitation53%
Record high74° (1966)
Record low27° (2019)
Sun, 0157° / 42°0.29
57 °
Waterloo, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high57°
Average low42°
Average precipitation0.29 in
Chance of precipitation57%
Record high74° (1962)
Record low28° (2019)
Mon, 0258° / 42°0.22
58 °
Waterloo, Monday, 2 November
Climate normal for this date — 60-year average.
Average high58°
Average low42°
Average precipitation0.22 in
Chance of precipitation52%
Record high70° (1976)
Record low26° (1973)
Tue, 0358° / 43°0.21
58 °
Waterloo, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high58°
Average low43°
Average precipitation0.21 in
Chance of precipitation47%
Record high71° (2010)
Record low23° (1994)
Wed, 0457° / 43°0.35
57 °
Waterloo, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high57°
Average low43°
Average precipitation0.35 in
Chance of precipitation60%
Record high72° (1980)
Record low31° (1961)
Thu, 0556° / 43°0.31
56 °
Waterloo, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high56°
Average low43°
Average precipitation0.31 in
Chance of precipitation67%
Record high68° (1980)
Record low27° (1971)
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 Waterloo, OR 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 Waterloo, OR 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.