Monthly outlook for Waterloo, OR: average high 63.3°, average low 44.7°. That is 0.1° below the climate normal for October. Precipitation is expected on 7 days (about 2.8 inches), against a normal of 6 days and 2.6 inches. The warmest day looks like 8 October (79°), the coolest 12 October (38°).
63.3°/44.7°
Average high / low
−0.1°
Below normal
7 / 6
Wet days / normal
2.8 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
8 October – 17 October
65°
64.5°
+0.3°
18 October – 27 October
60.4°
61°
-0.3°
28 October – 6 November
at normal
56.8°
—
October records over 66 years
91.4°10 October 1991All-time high
24.4°29 October 2023All-time low
Fri, 0965° / 48°0.07
65 °
Waterloo, Friday, 9 October
Light rain. High 65°, low 48°.
Pressure29.91 inHg
Wind5.3 mph SW
Humidity62%
Visibility6.2 mi
Dew point51°
Sat, 1061° / 42°0.04
61 °
Waterloo, Saturday, 10 October
Light rain. High 61°, low 42°.
Pressure29.85 inHg
Wind2.6 mph W
Humidity58%
Visibility5.2 mi
Dew point42°
Sun, 1166° / 41°0
66 °
Waterloo, Sunday, 11 October
Clear. High 66°, low 41°.
Pressure29.88 inHg
Wind9.7 mph N
Humidity43%
Visibility6.2 mi
Dew point37°
Mon, 1266° / 38°0
66 °
Waterloo, Monday, 12 October
Clear. High 66°, low 38°.
Pressure30.00 inHg
Wind13.6 mph N
Humidity39%
Visibility—
Dew point31°
Tue, 1363° / 43°0.28
63 °
Waterloo, Tuesday, 13 October
Rain. High 63°, low 43°.
Pressure30.00 inHg
Wind5.1 mph SW
Humidity49%
Visibility—
Dew point35°
Wed, 1457° / 43°0.21
57 °
Waterloo, Wednesday, 14 October
Light rain. High 57°, low 43°.
Pressure30.06 inHg
Wind7.9 mph NW
Humidity84%
Visibility—
Dew point46°
Thu, 1562° / 43°0.01
62 °
Waterloo, Thursday, 15 October
Light rain. High 62°, low 43°.
Pressure30.30 inHg
Wind7.7 mph N
Humidity61%
Visibility—
Dew point41°
Fri, 1664° / 42°0
64 °
Waterloo, Friday, 16 October
Overcast. High 64°, low 42°.
Pressure30.30 inHg
Wind5.9 mph NW
Humidity46%
Visibility—
Dew point35°
Sat, 1768° / 46°0
68 °
Waterloo, Saturday, 17 October
Partly cloudy. High 68°, low 46°.
Pressure30.30 inHg
Wind5.8 mph N
Humidity47%
Visibility—
Dew point38°
Sun, 1866° / 46°0
66 °
Waterloo, Sunday, 18 October
Overcast. High 66°, low 46°.
Pressure30.21 inHg
Wind6.4 mph N
Humidity62%
Visibility—
Dew point44°
Mon, 1967° / 45°0
67 °
Waterloo, Monday, 19 October
Clear. High 67°, low 45°.
Pressure30.18 inHg
Wind7 mph NW
Humidity52%
Visibility—
Dew point40°
Tue, 2065° / 48°0
65 °
Waterloo, Tuesday, 20 October
Overcast. High 65°, low 48°.
Pressure30.15 inHg
Wind8.1 mph S
Humidity61%
Visibility—
Dew point44°
Wed, 2160° / 48°0.41
60 °
Waterloo, Wednesday, 21 October
Rain. High 60°, low 48°.
Pressure30.00 inHg
Wind14.7 mph SW
Humidity79%
Visibility—
Dew point49°
Thu, 2255° / 48°1.38
55 °
Waterloo, Thursday, 22 October
Heavy rain. High 55°, low 48°.
Pressure29.56 inHg
Wind21 mph SW
Humidity78%
Visibility—
Dew point47°
Fri, 2350° / 47°0.36
50 °
Waterloo, Friday, 23 October
Rain. High 50°, low 47°.
Pressure29.80 inHg
Wind13 mph SW
Humidity87%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Fri, 0655° / 43°0.34
55 °
Waterloo, Friday, 6 November
Climate normal for this date — 60-year average.
Average high55°
Average low43°
Average precipitation0.34 in
Chance of precipitation67%
Record high70° (1999)
Record low31° (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.