Monthly outlook for Myrtle Creek, OR: average high 84.6°, average low 54.2°. That is 1° above the climate normal for August. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 1 days and 0.4 inches. The warmest day looks like 9 August (92.8°), the coolest 23 August (49.9°).
84.6°/54.2°
Average high / low
+1°
Above normal
1 / 1
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
86.9°
83.7°
+1.7°
19 August – 28 August
80.7°
81.3°
-0.3°
29 August – 7 September
at normal
80.1°
—
August records over 66 years
109.6°14 August 2023All-time high
46.2°25 August 1993All-time low
Climate normals and records are computed from the nearest reference point — Roseburg (14 mi).
Mon, 1091° / 53°0
91 °
Myrtle Creek, Monday, 10 August
Clear. High 91°, low 53°.
Pressure30.00 inHg
Wind5.2 mph NW
Humidity33%
Visibility6.2 mi
Dew point46°
Tue, 1189° / 51°0
89 °
Myrtle Creek, Tuesday, 11 August
Clear. High 89°, low 51°.
Pressure30.03 inHg
Wind5.2 mph NW
Humidity35%
Visibility6.2 mi
Dew point48°
Wed, 1287° / 54°0
87 °
Myrtle Creek, Wednesday, 12 August
Clear. High 87°, low 54°.
Pressure29.94 inHg
Wind5.1 mph NW
Humidity45%
Visibility6.2 mi
Dew point54°
Thu, 1388° / 51°0
88 °
Myrtle Creek, Thursday, 13 August
Clear. High 88°, low 51°.
Pressure29.83 inHg
Wind9.3 mph N
Humidity29%
Visibility—
Dew point46°
Fri, 1489° / 53°0
89 °
Myrtle Creek, Friday, 14 August
Clear. High 89°, low 53°.
Pressure29.91 inHg
Wind8.8 mph N
Humidity28%
Visibility—
Dew point47°
Sat, 1590° / 54°0
90 °
Myrtle Creek, Saturday, 15 August
Overcast. High 90°, low 54°.
Pressure29.94 inHg
Wind10.9 mph NW
Humidity28%
Visibility—
Dew point47°
Sun, 1684° / 52°0
84 °
Myrtle Creek, Sunday, 16 August
Overcast. High 84°, low 52°.
Pressure30.00 inHg
Wind3.2 mph N
Humidity51%
Visibility—
Dew point50°
Mon, 1780° / 57°0.06
80 °
Myrtle Creek, Monday, 17 August
Light rain. High 80°, low 57°.
Pressure30.00 inHg
Wind6.6 mph N
Humidity34%
Visibility—
Dew point46°
Tue, 1878° / 58°0
78 °
Myrtle Creek, Tuesday, 18 August
Overcast. High 78°, low 58°.
Pressure29.97 inHg
Wind4.6 mph NW
Humidity38%
Visibility—
Dew point48°
Wed, 1985° / 60°0.02
85 °
Myrtle Creek, Wednesday, 19 August
Light rain. High 85°, low 60°.
Pressure29.88 inHg
Wind9.7 mph NW
Humidity35%
Visibility—
Dew point52°
Thu, 2074° / 59°0
74 °
Myrtle Creek, Thursday, 20 August
Overcast. High 74°, low 59°.
Pressure29.94 inHg
Wind8.9 mph NW
Humidity59%
Visibility—
Dew point58°
Fri, 2181° / 55°0
81 °
Myrtle Creek, Friday, 21 August
Overcast. High 81°, low 55°.
Pressure29.94 inHg
Wind10.8 mph NW
Humidity32%
Visibility—
Dew point45°
Sat, 2278° / 52°0
78 °
Myrtle Creek, Saturday, 22 August
Overcast. High 78°, low 52°.
Pressure30.03 inHg
Wind11.6 mph NW
Humidity39%
Visibility—
Dew point47°
Sun, 2382° / 50°0
82 °
Myrtle Creek, Sunday, 23 August
Partly cloudy. High 82°, low 50°.
Pressure30.00 inHg
Wind9.9 mph N
Humidity31%
Visibility—
Dew point44°
Mon, 2483° / 51°0
83 °
Myrtle Creek, Monday, 24 August
Overcast. High 83°, low 51°.
Pressure29.85 inHg
Wind12.1 mph NW
Humidity30%
Visibility—
Dew point46°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2581° / 55°0.05
81 °
Myrtle Creek, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0.05 in
Chance of precipitation13%
Record high99° (2010)
Record low46° (1993)
Wed, 2682° / 56°0.02
82 °
Myrtle Creek, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0.02 in
Chance of precipitation10%
Record high97° (2025)
Record low48° (1995)
Thu, 2782° / 56°0.02
82 °
Myrtle Creek, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0.02 in
Chance of precipitation10%
Record high102° (2019)
Record low49° (1960)
Fri, 2882° / 56°0.02
82 °
Myrtle Creek, Friday, 28 August
Climate normal for this date — 60-year average.
Average high82°
Average low56°
Average precipitation0.02 in
Chance of precipitation7%
Record high101° (2017)
Record low47° (1965)
Sat, 2980° / 56°0.03
80 °
Myrtle Creek, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high80°
Average low56°
Average precipitation0.03 in
Chance of precipitation8%
Record high96° (2007)
Record low46° (1965)
Sun, 3079° / 56°0.04
79 °
Myrtle Creek, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high79°
Average low56°
Average precipitation0.04 in
Chance of precipitation15%
Record high102° (1987)
Record low47° (1965)
Mon, 3180° / 55°0.02
80 °
Myrtle Creek, Monday, 31 August
Climate normal for this date — 60-year average.
Average high80°
Average low55°
Average precipitation0.02 in
Chance of precipitation8%
Record high101° (1987)
Record low47° (1999)
Tue, 0180° / 55°0.03
80 °
Myrtle Creek, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high80°
Average low55°
Average precipitation0.03 in
Chance of precipitation13%
Record high101° (1988)
Record low45° (1973)
Wed, 0281° / 55°0.02
81 °
Myrtle Creek, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0.02 in
Chance of precipitation12%
Record high102° (2017)
Record low46° (1975)
Thu, 0381° / 55°0.02
81 °
Myrtle Creek, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0.02 in
Chance of precipitation8%
Record high103° (2017)
Record low47° (2000)
Fri, 0481° / 55°0.03
81 °
Myrtle Creek, Friday, 4 September
Climate normal for this date — 60-year average.
Average high81°
Average low55°
Average precipitation0.03 in
Chance of precipitation12%
Record high100° (2017)
Record low46° (1969)
Sat, 0580° / 55°0.02
80 °
Myrtle Creek, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high80°
Average low55°
Average precipitation0.02 in
Chance of precipitation8%
Record high100° (2024)
Record low46° (1969)
Sun, 0680° / 54°0.02
80 °
Myrtle Creek, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high80°
Average low54°
Average precipitation0.02 in
Chance of precipitation13%
Record high96° (2022)
Record low45° (1960)
Mon, 0779° / 55°0.02
79 °
Myrtle Creek, Monday, 7 September
Climate normal for this date — 60-year average.
Average high79°
Average low55°
Average precipitation0.02 in
Chance of precipitation12%
Record high98° (2021)
Record low47° (1964)
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 Myrtle Creek, 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 Myrtle Creek, 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.