Monthly outlook for Charlos Heights, MT: average high 84°, average low 56.5°. That is 0.7° above the climate normal for August. Precipitation is expected on 3 days (about 1.2 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 13 August (91°), the coolest 23 August (49.5°).
84°/56.5°
Average high / low
+0.7°
Above normal
3 / 4
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
85.3°
83.6°
+1°
19 August – 28 August
81.7°
81°
+0.4°
29 August – 7 September
at normal
78.4°
—
August records over 66 years
101.1°24 August 1969All-time high
35.4°28 August 1960All-time low
Climate normals and records are computed from the nearest reference point — Corvallis (13 mi).
Mon, 1089° / 52°0
89 °
Charlos Heights, Monday, 10 August
Clear. High 89°, low 52°.
Pressure29.85 inHg
Wind1.9 mph N
Humidity16%
Visibility6.2 mi
Dew point33°
Tue, 1191° / 59°0
91 °
Charlos Heights, Tuesday, 11 August
Clear. High 91°, low 59°.
Pressure29.94 inHg
Wind2.4 mph NE
Humidity16%
Visibility6.2 mi
Dew point33°
Wed, 1286° / 60°0
86 °
Charlos Heights, Wednesday, 12 August
Overcast. High 86°, low 60°.
Pressure29.85 inHg
Wind3 mph NE
Humidity17%
Visibility6.2 mi
Dew point30°
Thu, 1391° / 60°0.01
91 °
Charlos Heights, Thursday, 13 August
Light rain. High 91°, low 60°.
Pressure29.77 inHg
Wind9.6 mph W
Humidity28%
Visibility—
Dew point45°
Fri, 1486° / 58°0
86 °
Charlos Heights, Friday, 14 August
Overcast. High 86°, low 58°.
Pressure29.88 inHg
Wind8.8 mph NW
Humidity37%
Visibility—
Dew point49°
Sat, 1587° / 54°0.06
87 °
Charlos Heights, Saturday, 15 August
Light rain. High 87°, low 54°.
Pressure30.00 inHg
Wind4.9 mph S
Humidity28%
Visibility—
Dew point44°
Sun, 1677° / 60°0.12
77 °
Charlos Heights, Sunday, 16 August
Light rain. High 77°, low 60°.
Pressure29.97 inHg
Wind4.9 mph E
Humidity39%
Visibility—
Dew point48°
Mon, 1781° / 58°0.03
81 °
Charlos Heights, Monday, 17 August
Light rain. High 81°, low 58°.
Pressure29.88 inHg
Wind12.1 mph SW
Humidity31%
Visibility—
Dew point45°
Tue, 1877° / 54°0.01
77 °
Charlos Heights, Tuesday, 18 August
Light rain. High 77°, low 54°.
Pressure29.94 inHg
Wind8.9 mph NW
Humidity44%
Visibility—
Dew point47°
Wed, 1981° / 56°0
81 °
Charlos Heights, Wednesday, 19 August
Overcast. High 81°, low 56°.
Pressure29.97 inHg
Wind7.8 mph NW
Humidity37%
Visibility—
Dew point45°
Thu, 2089° / 54°0
89 °
Charlos Heights, Thursday, 20 August
Partly cloudy. High 89°, low 54°.
Pressure29.88 inHg
Wind7 mph NE
Humidity31%
Visibility—
Dew point44°
Fri, 2188° / 60°0
88 °
Charlos Heights, Friday, 21 August
Overcast. High 88°, low 60°.
Pressure29.77 inHg
Wind9.6 mph W
Humidity28%
Visibility—
Dew point44°
Sat, 2272° / 57°0.91
72 °
Charlos Heights, Saturday, 22 August
Rain. High 72°, low 57°.
Pressure29.91 inHg
Wind7.1 mph N
Humidity91%
Visibility—
Dew point56°
Sun, 2375° / 49°0.02
75 °
Charlos Heights, Sunday, 23 August
Light rain. High 75°, low 49°.
Pressure30.00 inHg
Wind5.1 mph W
Humidity38%
Visibility—
Dew point40°
Mon, 2485° / 54°0
85 °
Charlos Heights, Monday, 24 August
Overcast. High 85°, low 54°.
Pressure29.85 inHg
Wind6.8 mph SW
Humidity26%
Visibility—
Dew point37°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2581° / 53°0.02
81 °
Charlos Heights, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high81°
Average low53°
Average precipitation0.02 in
Chance of precipitation10%
Record high97° (1981)
Record low39° (1960)
Wed, 2681° / 53°0.03
81 °
Charlos Heights, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high81°
Average low53°
Average precipitation0.03 in
Chance of precipitation17%
Record high95° (1981)
Record low42° (1992)
Thu, 2781° / 54°0.06
81 °
Charlos Heights, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high81°
Average low54°
Average precipitation0.06 in
Chance of precipitation25%
Record high94° (2011)
Record low38° (1960)
Fri, 2881° / 53°0.04
81 °
Charlos Heights, Friday, 28 August
Climate normal for this date — 60-year average.
Average high81°
Average low53°
Average precipitation0.04 in
Chance of precipitation18%
Record high95° (2012)
Record low35° (1960)
Sat, 2981° / 53°0.02
81 °
Charlos Heights, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high81°
Average low53°
Average precipitation0.02 in
Chance of precipitation13%
Record high94° (1998)
Record low40° (1965)
Sun, 3080° / 53°0.04
80 °
Charlos Heights, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high80°
Average low53°
Average precipitation0.04 in
Chance of precipitation22%
Record high93° (2016)
Record low37° (1965)
Mon, 3178° / 52°0.06
78 °
Charlos Heights, Monday, 31 August
Climate normal for this date — 60-year average.
Average high78°
Average low52°
Average precipitation0.06 in
Chance of precipitation22%
Record high91° (2022)
Record low40° (1965)
Tue, 0178° / 51°0.04
78 °
Charlos Heights, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high78°
Average low51°
Average precipitation0.04 in
Chance of precipitation20%
Record high94° (1967)
Record low41° (1980)
Wed, 0279° / 51°0.04
79 °
Charlos Heights, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high79°
Average low51°
Average precipitation0.04 in
Chance of precipitation18%
Record high96° (2017)
Record low36° (2008)
Thu, 0379° / 51°0.04
79 °
Charlos Heights, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high79°
Average low51°
Average precipitation0.04 in
Chance of precipitation17%
Record high99° (2017)
Record low40° (1980)
Fri, 0479° / 51°0.02
79 °
Charlos Heights, Friday, 4 September
Climate normal for this date — 60-year average.
Average high79°
Average low51°
Average precipitation0.02 in
Chance of precipitation18%
Record high96° (1998)
Record low40° (1969)
Sat, 0578° / 52°0.04
78 °
Charlos Heights, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high78°
Average low52°
Average precipitation0.04 in
Chance of precipitation18%
Record high95° (1998)
Record low40° (1969)
Sun, 0677° / 51°0.05
77 °
Charlos Heights, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high77°
Average low51°
Average precipitation0.05 in
Chance of precipitation18%
Record high95° (2022)
Record low36° (2010)
Mon, 0777° / 50°0.05
77 °
Charlos Heights, Monday, 7 September
Climate normal for this date — 60-year average.
Average high77°
Average low50°
Average precipitation0.05 in
Chance of precipitation20%
Record high95° (2022)
Record low36° (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 Charlos Heights, 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 Charlos Heights, 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.