Monthly outlook for Susanville, OR: average high 78.1°, average low 51°. That is 3.2° above the climate normal for August. Precipitation is expected on 1 day (about 0.1 inches), against a normal of 3 days and 0.6 inches. The warmest day looks like 15 August (88.6°), the coolest 23 August (42.8°).
78.1°/51°
Average high / low
+3.2°
Above normal
1 / 3
Wet days / normal
0.1 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 August – 18 August
80.3°
73.4°
+3.8°
19 August – 28 August
74.4°
70.4°
+2.2°
29 August – 7 September
at normal
68.6°
—
August records over 66 years
91.2°4 August 1961All-time high
28°21 August 1968All-time low
Climate normals and records are computed from the nearest reference point — Greenhorn (14 mi).
Mon, 1081° / 49°0
81 °
Susanville, Monday, 10 August
Clear. High 81°, low 49°.
Pressure29.94 inHg
Wind6.9 mph NW
Humidity16%
Visibility6.2 mi
Dew point28°
Tue, 1183° / 52°0
83 °
Susanville, Tuesday, 11 August
Clear. High 83°, low 52°.
Pressure29.94 inHg
Wind6.3 mph W
Humidity14%
Visibility6.2 mi
Dew point28°
Wed, 1283° / 54°0
83 °
Susanville, Wednesday, 12 August
Clear. High 83°, low 54°.
Pressure29.85 inHg
Wind6.3 mph W
Humidity21%
Visibility6.2 mi
Dew point36°
Thu, 1381° / 53°0
81 °
Susanville, Thursday, 13 August
Overcast. High 81°, low 53°.
Pressure29.77 inHg
Wind8.5 mph NW
Humidity19%
Visibility—
Dew point32°
Fri, 1483° / 54°0
83 °
Susanville, Friday, 14 August
Clear. High 83°, low 54°.
Pressure29.88 inHg
Wind10.3 mph NW
Humidity23%
Visibility—
Dew point34°
Sat, 1589° / 58°0
89 °
Susanville, Saturday, 15 August
Overcast. High 89°, low 58°.
Pressure29.94 inHg
Wind11.3 mph SW
Humidity26%
Visibility—
Dew point40°
Sun, 1678° / 58°0.02
78 °
Susanville, Sunday, 16 August
Light rain. High 78°, low 58°.
Pressure29.91 inHg
Wind7.1 mph SE
Humidity29%
Visibility—
Dew point40°
Mon, 1771° / 48°0
71 °
Susanville, Monday, 17 August
Overcast. High 71°, low 48°.
Pressure29.91 inHg
Wind17.4 mph SW
Humidity31%
Visibility—
Dew point37°
Tue, 1869° / 48°0
69 °
Susanville, Tuesday, 18 August
Overcast. High 69°, low 48°.
Pressure29.97 inHg
Wind6.5 mph W
Humidity35%
Visibility—
Dew point37°
Wed, 1977° / 50°0
77 °
Susanville, Wednesday, 19 August
Overcast. High 77°, low 50°.
Pressure29.94 inHg
Wind6.5 mph W
Humidity35%
Visibility—
Dew point40°
Thu, 2080° / 53°0
80 °
Susanville, Thursday, 20 August
Overcast. High 80°, low 53°.
Pressure29.91 inHg
Wind6.6 mph N
Humidity35%
Visibility—
Dew point42°
Fri, 2172° / 50°0.05
72 °
Susanville, Friday, 21 August
Light rain. High 72°, low 50°.
Pressure29.88 inHg
Wind5.5 mph NW
Humidity52%
Visibility—
Dew point47°
Sat, 2265° / 47°0.01
65 °
Susanville, Saturday, 22 August
Light rain. High 65°, low 47°.
Pressure29.94 inHg
Wind13 mph W
Humidity44%
Visibility—
Dew point38°
Sun, 2373° / 43°0
73 °
Susanville, Sunday, 23 August
Overcast. High 73°, low 43°.
Pressure30.03 inHg
Wind8.1 mph NW
Humidity33%
Visibility—
Dew point33°
Mon, 2479° / 48°0
79 °
Susanville, Monday, 24 August
Overcast. High 79°, low 48°.
Pressure29.83 inHg
Wind12.8 mph SW
Humidity22%
Visibility—
Dew point29°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2570° / 45°0.03
70 °
Susanville, Tuesday, 25 August
Climate normal for this date — 60-year average.
Average high70°
Average low45°
Average precipitation0.03 in
Chance of precipitation23%
Record high85° (1996)
Record low30° (1993)
Wed, 2671° / 45°0.03
71 °
Susanville, Wednesday, 26 August
Climate normal for this date — 60-year average.
Average high71°
Average low45°
Average precipitation0.03 in
Chance of precipitation18%
Record high84° (1996)
Record low31° (1993)
Thu, 2770° / 46°0.02
70 °
Susanville, Thursday, 27 August
Climate normal for this date — 60-year average.
Average high70°
Average low46°
Average precipitation0.02 in
Chance of precipitation13%
Record high84° (2011)
Record low29° (1960)
Fri, 2871° / 46°0.02
71 °
Susanville, Friday, 28 August
Climate normal for this date — 60-year average.
Average high71°
Average low46°
Average precipitation0.02 in
Chance of precipitation12%
Record high83° (2019)
Record low30° (2024)
Sat, 2971° / 46°0.02
71 °
Susanville, Saturday, 29 August
Climate normal for this date — 60-year average.
Average high71°
Average low46°
Average precipitation0.02 in
Chance of precipitation12%
Record high83° (2017)
Record low30° (1965)
Sun, 3068° / 45°0.06
68 °
Susanville, Sunday, 30 August
Climate normal for this date — 60-year average.
Average high68°
Average low45°
Average precipitation0.06 in
Chance of precipitation20%
Record high83° (2022)
Record low28° (1965)
Mon, 3168° / 44°0.02
68 °
Susanville, Monday, 31 August
Climate normal for this date — 60-year average.
Average high68°
Average low44°
Average precipitation0.02 in
Chance of precipitation8%
Record high85° (2022)
Record low30° (1999)
Tue, 0169° / 44°0.02
69 °
Susanville, Tuesday, 1 September
Climate normal for this date — 60-year average.
Average high69°
Average low44°
Average precipitation0.02 in
Chance of precipitation10%
Record high85° (1998)
Record low31° (1999)
Wed, 0268° / 44°0.02
68 °
Susanville, Wednesday, 2 September
Climate normal for this date — 60-year average.
Average high68°
Average low44°
Average precipitation0.02 in
Chance of precipitation13%
Record high86° (2017)
Record low31° (1973)
Thu, 0369° / 45°0.02
69 °
Susanville, Thursday, 3 September
Climate normal for this date — 60-year average.
Average high69°
Average low45°
Average precipitation0.02 in
Chance of precipitation17%
Record high87° (2017)
Record low29° (2000)
Fri, 0469° / 44°0.03
69 °
Susanville, Friday, 4 September
Climate normal for this date — 60-year average.
Average high69°
Average low44°
Average precipitation0.03 in
Chance of precipitation18%
Record high87° (1988)
Record low30° (2000)
Sat, 0569° / 45°0.02
69 °
Susanville, Saturday, 5 September
Climate normal for this date — 60-year average.
Average high69°
Average low45°
Average precipitation0.02 in
Chance of precipitation15%
Record high86° (2017)
Record low31° (1969)
Sun, 0667° / 44°0.03
67 °
Susanville, Sunday, 6 September
Climate normal for this date — 60-year average.
Average high67°
Average low44°
Average precipitation0.03 in
Chance of precipitation13%
Record high85° (2022)
Record low29° (2015)
Mon, 0767° / 43°0.04
67 °
Susanville, Monday, 7 September
Climate normal for this date — 60-year average.
Average high67°
Average low43°
Average precipitation0.04 in
Chance of precipitation15%
Record high83° (2021)
Record low28° (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 Susanville, 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 Susanville, 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.