Monthly outlook for Duncan Ranch Colony, MT: average high 87.5°, average low 60.6°. That is 4.9° above the climate normal for August. Precipitation is expected on 3 days (about 0.6 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 24 August (98.9°), the coolest 10 August (53.4°).
87.5°/60.6°
Average high / low
+4.9°
Above normal
3 / 3
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
83.2°
79.1°
+2.3°
19 August – 28 August
94.5°
77.6°
+9.4°
29 August – 7 September
at normal
75.2°
—
August records over 66 years
97.9°11 August 2018All-time high
25.9°25 August 1992All-time low
Climate normals and records are computed from the nearest reference point — Harlowton (9 mi).
Mon, 1089° / 53°0
89 °
Duncan Ranch Colony, Monday, 10 August
Clear. High 89°, low 53°.
Pressure29.80 inHg
Wind0.8 mph S
Humidity17%
Visibility6.2 mi
Dew point35°
Tue, 1190° / 61°0
90 °
Duncan Ranch Colony, Tuesday, 11 August
Clear. High 90°, low 61°.
Pressure29.85 inHg
Wind13.4 mph W
Humidity13%
Visibility6.2 mi
Dew point28°
Wed, 1285° / 58°0.02
85 °
Duncan Ranch Colony, Wednesday, 12 August
Light rain. High 85°, low 58°.
Pressure29.83 inHg
Wind8.7 mph E
Humidity25%
Visibility6.2 mi
Dew point42°
Thu, 1367° / 59°0.42
67 °
Duncan Ranch Colony, Thursday, 13 August
Rain. High 67°, low 59°.
Pressure29.91 inHg
Wind10.4 mph E
Humidity86%
Visibility—
Dew point57°
Fri, 1472° / 56°0.11
72 °
Duncan Ranch Colony, Friday, 14 August
Light rain. High 72°, low 56°.
Pressure29.97 inHg
Wind9.6 mph NE
Humidity64%
Visibility—
Dew point51°
Sat, 1581° / 54°0.04
81 °
Duncan Ranch Colony, Saturday, 15 August
Light rain. High 81°, low 54°.
Pressure30.06 inHg
Wind19.8 mph S
Humidity51%
Visibility—
Dew point51°
Sun, 1690° / 61°0
90 °
Duncan Ranch Colony, Sunday, 16 August
Clear. High 90°, low 61°.
Pressure30.00 inHg
Wind6.3 mph NW
Humidity29%
Visibility—
Dew point44°
Mon, 1786° / 68°0.01
86 °
Duncan Ranch Colony, Monday, 17 August
Light rain. High 86°, low 68°.
Pressure29.97 inHg
Wind21.6 mph W
Humidity45%
Visibility—
Dew point49°
Tue, 1886° / 62°0
86 °
Duncan Ranch Colony, Tuesday, 18 August
Clear. High 86°, low 62°.
Pressure30.00 inHg
Wind15.7 mph W
Humidity21%
Visibility—
Dew point36°
Wed, 1989° / 60°0
89 °
Duncan Ranch Colony, Wednesday, 19 August
Clear. High 89°, low 60°.
Pressure29.97 inHg
Wind19.5 mph NW
Humidity13%
Visibility—
Dew point26°
Thu, 2094° / 63°0
94 °
Duncan Ranch Colony, Thursday, 20 August
Clear. High 94°, low 63°.
Pressure29.88 inHg
Wind22.6 mph NW
Humidity13%
Visibility—
Dew point29°
Fri, 2193° / 65°0
93 °
Duncan Ranch Colony, Friday, 21 August
Clear. High 93°, low 65°.
Pressure29.85 inHg
Wind18.9 mph W
Humidity13%
Visibility—
Dew point29°
Sat, 2296° / 57°0
96 °
Duncan Ranch Colony, Saturday, 22 August
Clear. High 96°, low 57°.
Pressure29.97 inHg
Wind8.7 mph E
Humidity26%
Visibility—
Dew point41°
Sun, 2398° / 67°0
98 °
Duncan Ranch Colony, Sunday, 23 August
Clear. High 98°, low 67°.
Pressure29.97 inHg
Wind16.3 mph W
Humidity12%
Visibility—
Dew point31°
Mon, 2499° / 68°0
99 °
Duncan Ranch Colony, Monday, 24 August
Clear. High 99°, low 68°.
Pressure29.94 inHg
Wind17.2 mph W
Humidity9%
Visibility—
Dew point25°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2577° / 50°0.02
77 °
Duncan Ranch Colony, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high77°
Average low50°
Average precipitation0.02 in
Chance of precipitation10%
Record high94° (2008)
Record low26° (1992)
Wed, 2677° / 51°0.02
77 °
Duncan Ranch Colony, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high77°
Average low51°
Average precipitation0.02 in
Chance of precipitation12%
Record high92° (2010)
Record low35° (1992)
Thu, 2778° / 51°0.02
78 °
Duncan Ranch Colony, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high78°
Average low51°
Average precipitation0.02 in
Chance of precipitation12%
Record high91° (2011)
Record low36° (1993)
Fri, 2877° / 51°0.04
77 °
Duncan Ranch Colony, Friday, 28 August
Climate normal for this date — 60-year average.
Average high77°
Average low51°
Average precipitation0.04 in
Chance of precipitation15%
Record high94° (2012)
Record low38° (1960)
Sat, 2978° / 50°0.02
78 °
Duncan Ranch Colony, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high78°
Average low50°
Average precipitation0.02 in
Chance of precipitation8%
Record high90° (2005)
Record low35° (1965)
Sun, 3077° / 51°0.04
77 °
Duncan Ranch Colony, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high77°
Average low51°
Average precipitation0.04 in
Chance of precipitation17%
Record high91° (2022)
Record low36° (1962)
Mon, 3175° / 50°0.03
75 °
Duncan Ranch Colony, Monday, 31 August
Climate normal for this date — 60-year average.
Average high75°
Average low50°
Average precipitation0.03 in
Chance of precipitation18%
Record high92° (2022)
Record low35° (1993)
Tue, 0175° / 50°0.04
75 °
Duncan Ranch Colony, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high75°
Average low50°
Average precipitation0.04 in
Chance of precipitation10%
Record high91° (2022)
Record low38° (1965)
Wed, 0276° / 50°0.03
76 °
Duncan Ranch Colony, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high76°
Average low50°
Average precipitation0.03 in
Chance of precipitation13%
Record high91° (2024)
Record low37° (2008)
Thu, 0376° / 49°0.03
76 °
Duncan Ranch Colony, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high76°
Average low49°
Average precipitation0.03 in
Chance of precipitation8%
Record high96° (2022)
Record low34° (1974)
Fri, 0475° / 49°0.03
75 °
Duncan Ranch Colony, Friday, 4 September
Climate normal for this date — 60-year average.
Average high75°
Average low49°
Average precipitation0.03 in
Chance of precipitation17%
Record high91° (2022)
Record low31° (1962)
Sat, 0575° / 49°0.04
75 °
Duncan Ranch Colony, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high75°
Average low49°
Average precipitation0.04 in
Chance of precipitation17%
Record high95° (2020)
Record low34° (2008)
Sun, 0673° / 49°0.05
73 °
Duncan Ranch Colony, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high73°
Average low49°
Average precipitation0.05 in
Chance of precipitation18%
Record high89° (1988)
Record low38° (1969)
Mon, 0773° / 48°0.05
73 °
Duncan Ranch Colony, Monday, 7 September
Climate normal for this date — 60-year average.
Average high73°
Average low48°
Average precipitation0.05 in
Chance of precipitation23%
Record high98° (2022)
Record low34° (1992)
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 Duncan Ranch Colony, 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 Duncan Ranch Colony, 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.