Monthly outlook for Waterloo, MT: average high 53°, average low 36.2°. That is 2.1° below the climate normal for October. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 20 October (67.1°), the coolest 13 October (26°).
53°/36.2°
Average high / low
−2.1°
Below normal
4 / 4
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
50.6°
57.5°
-3.8°
20 October – 29 October
57°
53.8°
+1.7°
30 October – 8 November
at normal
46.9°
—
October records over 66 years
86°3 October 2010All-time high
-11.4°31 October 1996All-time low
Climate normals and records are computed from the nearest reference point — Cardwell (15 mi).
Sun, 1142° / 31°0.46
42 °
Waterloo, Sunday, 11 October
Snow. High 42°, low 31°.
Pressure29.94 inHg
Wind6.3 mph NE
Humidity82%
Visibility2.4 mi
Dew point30°
Mon, 1233° / 28°0.27
33 °
Waterloo, Monday, 12 October
Snow. High 33°, low 28°.
Pressure30.15 inHg
Wind2.8 mph NE
Humidity92%
Visibility6.2 mi
Dew point27°
Tue, 1342° / 26°0
42 °
Waterloo, Tuesday, 13 October
Clear. High 42°, low 26°.
Pressure30.12 inHg
Wind1.6 mph SE
Humidity72%
Visibility—
Dew point30°
Wed, 1446° / 31°0
46 °
Waterloo, Wednesday, 14 October
Partly cloudy. High 46°, low 31°.
Pressure30.24 inHg
Wind2.3 mph E
Humidity64%
Visibility—
Dew point29°
Thu, 1555° / 32°0.01
55 °
Waterloo, Thursday, 15 October
Light snow. High 55°, low 32°.
Pressure30.33 inHg
Wind7.6 mph E
Humidity47%
Visibility—
Dew point29°
Fri, 1643° / 29°0.02
43 °
Waterloo, Friday, 16 October
Light snow. High 43°, low 29°.
Pressure30.71 inHg
Wind7.9 mph NE
Humidity28%
Visibility—
Dew point7°
Sat, 1760° / 33°0
60 °
Waterloo, Saturday, 17 October
Clear. High 60°, low 33°.
Pressure30.27 inHg
Wind15 mph SW
Humidity18%
Visibility—
Dew point8°
Sun, 1863° / 44°0
63 °
Waterloo, Sunday, 18 October
Overcast. High 63°, low 44°.
Pressure30.03 inHg
Wind19 mph SW
Humidity22%
Visibility—
Dew point17°
Mon, 1963° / 47°0
63 °
Waterloo, Monday, 19 October
Overcast. High 63°, low 47°.
Pressure29.97 inHg
Wind11.9 mph SW
Humidity29%
Visibility—
Dew point24°
Tue, 2067° / 48°0
67 °
Waterloo, Tuesday, 20 October
Overcast. High 67°, low 48°.
Pressure29.77 inHg
Wind16 mph W
Humidity25%
Visibility—
Dew point23°
Wed, 2155° / 41°0.02
55 °
Waterloo, Wednesday, 21 October
Light rain. High 55°, low 41°.
Pressure29.77 inHg
Wind14.1 mph NW
Humidity24%
Visibility—
Dew point18°
Thu, 2260° / 37°0
60 °
Waterloo, Thursday, 22 October
Overcast. High 60°, low 37°.
Pressure30.00 inHg
Wind25.1 mph SW
Humidity37%
Visibility—
Dew point23°
Fri, 2354° / 40°0.01
54 °
Waterloo, Friday, 23 October
Light rain. High 54°, low 40°.
Pressure29.85 inHg
Wind29.5 mph W
Humidity55%
Visibility—
Dew point35°
Sat, 2452° / 36°0
52 °
Waterloo, Saturday, 24 October
Overcast. High 52°, low 36°.
Pressure30.12 inHg
Wind16.2 mph SW
Humidity42%
Visibility—
Dew point23°
Sun, 2554° / 41°0.09
54 °
Waterloo, Sunday, 25 October
Light rain. High 54°, low 41°.
Pressure29.50 inHg
Wind29.4 mph SW
Humidity57%
Visibility—
Dew point32°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2653° / 32°0.07
53 °
Waterloo, Monday, 26 October
Climate normal for this date — 60-year average.
Average high53°
Average low32°
Average precipitation0.07 in
Chance of precipitation35%
Record high69° (1999)
Record low3° (2020)
Tue, 2752° / 31°0.03
52 °
Waterloo, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high52°
Average low31°
Average precipitation0.03 in
Chance of precipitation20%
Record high68° (1987)
Record low6° (2023)
Wed, 2851° / 31°0.06
51 °
Waterloo, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high51°
Average low31°
Average precipitation0.06 in
Chance of precipitation33%
Record high69° (1987)
Record low4° (1991)
Thu, 2949° / 29°0.06
49 °
Waterloo, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high49°
Average low29°
Average precipitation0.06 in
Chance of precipitation27%
Record high70° (1964)
Record low-7° (1991)
Fri, 3048° / 29°0.04
48 °
Waterloo, Friday, 30 October
Climate normal for this date — 60-year average.
Average high48°
Average low29°
Average precipitation0.04 in
Chance of precipitation28%
Record high68° (1962)
Record low-11° (1991)
Sat, 3148° / 28°0.05
48 °
Waterloo, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high48°
Average low28°
Average precipitation0.05 in
Chance of precipitation23%
Record high67° (1988)
Record low-11° (1996)
Sun, 0148° / 29°0.04
48 °
Waterloo, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high48°
Average low29°
Average precipitation0.04 in
Chance of precipitation23%
Record high67° (2025)
Record low-12° (2002)
Mon, 0247° / 29°0.03
47 °
Waterloo, Monday, 2 November
Climate normal for this date — 60-year average.
Average high47°
Average low29°
Average precipitation0.03 in
Chance of precipitation20%
Record high64° (1965)
Record low-19° (1991)
Tue, 0347° / 28°0.04
47 °
Waterloo, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high47°
Average low28°
Average precipitation0.04 in
Chance of precipitation18%
Record high65° (1962)
Record low-13° (1991)
Wed, 0448° / 29°0.04
48 °
Waterloo, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high48°
Average low29°
Average precipitation0.04 in
Chance of precipitation27%
Record high64° (1962)
Record low-11° (1973)
Thu, 0547° / 29°0.04
47 °
Waterloo, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high47°
Average low29°
Average precipitation0.04 in
Chance of precipitation27%
Record high67° (2020)
Record low-5° (2003)
Fri, 0646° / 28°0.04
46 °
Waterloo, Friday, 6 November
Climate normal for this date — 60-year average.
Average high46°
Average low28°
Average precipitation0.04 in
Chance of precipitation32%
Record high66° (1999)
Record low6° (2017)
Sat, 0745° / 27°0.04
45 °
Waterloo, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high45°
Average low27°
Average precipitation0.04 in
Chance of precipitation25%
Record high64° (2010)
Record low2° (2000)
Sun, 0844° / 27°0.07
44 °
Waterloo, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high44°
Average low27°
Average precipitation0.07 in
Chance of precipitation37%
Record high64° (1999)
Record low4° (2022)
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, MT 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, MT 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.