Monthly outlook for Greenhorn, OR: average high 44.5°, average low 25°. That is 0.1° below the climate normal for October. Precipitation is expected on 4 days (about 1.7 inches), against a normal of 6 days and 1.4 inches. The warmest day looks like 19 October (59.3°), the coolest 30 October (12.8°).
44.5°/25°
Average high / low
−0.1°
Below normal
4 / 6
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
18 October – 27 October
48.2°
47°
+0.7°
28 October – 6 November
38.4°
40.5°
-1.2°
7 November – 16 November
at normal
36°
—
October records over 66 years
79.3°2 October 2010All-time high
-8.5°27 October 1970All-time low
Mon, 1959° / 30°0
59 °
Greenhorn, Monday, 19 October
Overcast. High 59°, low 30°.
Pressure29.88 inHg
Wind3.3 mph S
Humidity37%
Visibility6.2 mi
Dew point25°
Tue, 2055° / 31°0
55 °
Greenhorn, Tuesday, 20 October
Overcast. High 55°, low 31°.
Pressure30.00 inHg
Wind5 mph SE
Humidity45%
Visibility6.2 mi
Dew point33°
Wed, 2155° / 41°0
55 °
Greenhorn, Wednesday, 21 October
Overcast. High 55°, low 41°.
Pressure30.00 inHg
Wind8.1 mph SE
Humidity64%
Visibility6.2 mi
Dew point43°
Thu, 2241° / 33°0.96
41 °
Greenhorn, Thursday, 22 October
Snow. High 41°, low 33°.
Pressure29.80 inHg
Wind10.4 mph NW
Humidity96%
Visibility—
Dew point39°
Fri, 2336° / 23°0.02
36 °
Greenhorn, Friday, 23 October
Light snow. High 36°, low 23°.
Pressure30.27 inHg
Wind12.4 mph NW
Humidity93%
Visibility—
Dew point27°
Sat, 2452° / 25°0
52 °
Greenhorn, Saturday, 24 October
Overcast. High 52°, low 25°.
Pressure30.27 inHg
Wind3.6 mph SE
Humidity17%
Visibility—
Dew point0°
Sun, 2553° / 31°0.01
53 °
Greenhorn, Sunday, 25 October
Light rain. High 53°, low 31°.
Pressure30.06 inHg
Wind5.7 mph NW
Humidity23%
Visibility—
Dew point11°
Mon, 2635° / 22°0.01
35 °
Greenhorn, Monday, 26 October
Light rain. High 35°, low 22°.
Pressure29.97 inHg
Wind8.5 mph NW
Humidity65%
Visibility—
Dew point22°
Tue, 2736° / 22°0.02
36 °
Greenhorn, Tuesday, 27 October
Light snow. High 36°, low 22°.
Pressure30.06 inHg
Wind6.7 mph W
Humidity67%
Visibility—
Dew point20°
Wed, 2846° / 22°0
46 °
Greenhorn, Wednesday, 28 October
Clear. High 46°, low 22°.
Pressure29.91 inHg
Wind7.5 mph W
Humidity28%
Visibility—
Dew point8°
Thu, 2928° / 16°0.16
28 °
Greenhorn, Thursday, 29 October
Light snow. High 28°, low 16°.
Pressure29.97 inHg
Wind12.7 mph NW
Humidity73%
Visibility—
Dew point20°
Fri, 3036° / 13°0
36 °
Greenhorn, Friday, 30 October
Mostly clear. High 36°, low 13°.
Pressure30.27 inHg
Wind4.1 mph NW
Humidity44%
Visibility—
Dew point9°
Sat, 3143° / 16°0
43 °
Greenhorn, Saturday, 31 October
Clear. High 43°, low 16°.
Pressure30.09 inHg
Wind6 mph E
Humidity35%
Visibility—
Dew point9°
Sun, 0135° / 23°0.53
35 °
Greenhorn, Sunday, 1 November
Snow. High 35°, low 23°.
Pressure29.91 inHg
Wind11.2 mph SE
Humidity37%
Visibility—
Dew point10°
Mon, 0241° / 29°0.04
41 °
Greenhorn, Monday, 2 November
Snow. High 41°, low 29°.
Pressure29.91 inHg
Wind12.9 mph SW
Humidity98%
Visibility—
Dew point34°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 0341° / 25°0.05
41 °
Greenhorn, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high41°
Average low25°
Average precipitation0.05 in
Chance of precipitation28%
Record high56° (2020)
Record low5° (2022)
Wed, 0440° / 26°0.13
40 °
Greenhorn, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high40°
Average low26°
Average precipitation0.13 in
Chance of precipitation48%
Record high57° (1980)
Record low5° (2017)
Thu, 0540° / 25°0.12
40 °
Greenhorn, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high40°
Average low25°
Average precipitation0.12 in
Chance of precipitation50%
Record high57° (2012)
Record low1° (1971)
Fri, 0639° / 25°0.13
39 °
Greenhorn, Friday, 6 November
Climate normal for this date — 60-year average.
Average high39°
Average low25°
Average precipitation0.13 in
Chance of precipitation50%
Record high57° (2012)
Record low0° (1971)
Sat, 0738° / 24°0.14
38 °
Greenhorn, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high38°
Average low24°
Average precipitation0.14 in
Chance of precipitation50%
Record high56° (1976)
Record low3° (2017)
Sun, 0837° / 23°0.11
37 °
Greenhorn, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high37°
Average low23°
Average precipitation0.11 in
Chance of precipitation48%
Record high55° (2016)
Record low-4° (1994)
Mon, 0936° / 22°0.11
36 °
Greenhorn, Monday, 9 November
Climate normal for this date — 60-year average.
Average high36°
Average low22°
Average precipitation0.11 in
Chance of precipitation47%
Record high57° (2016)
Record low5° (2005)
Tue, 1036° / 22°0.1
36 °
Greenhorn, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high36°
Average low22°
Average precipitation0.1 in
Chance of precipitation43%
Record high56° (2016)
Record low-8° (1986)
Wed, 1136° / 22°0.09
36 °
Greenhorn, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high36°
Average low22°
Average precipitation0.09 in
Chance of precipitation37%
Record high55° (2016)
Record low2° (1985)
Thu, 1236° / 22°0.11
36 °
Greenhorn, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high36°
Average low22°
Average precipitation0.11 in
Chance of precipitation40%
Record high57° (1999)
Record low-6° (1985)
Fri, 1335° / 22°0.14
35 °
Greenhorn, Friday, 13 November
Climate normal for this date — 60-year average.
Average high35°
Average low22°
Average precipitation0.14 in
Chance of precipitation52%
Record high57° (1999)
Record low0° (1985)
Sat, 1435° / 20°0.09
35 °
Greenhorn, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high35°
Average low20°
Average precipitation0.09 in
Chance of precipitation50%
Record high55° (1999)
Record low1° (1994)
Sun, 1535° / 21°0.09
35 °
Greenhorn, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high35°
Average low21°
Average precipitation0.09 in
Chance of precipitation42%
Record high47° (2001)
Record low-10° (2014)
Mon, 1635° / 21°0.12
35 °
Greenhorn, Monday, 16 November
Climate normal for this date — 60-year average.
Average high35°
Average low21°
Average precipitation0.12 in
Chance of precipitation57%
Record high50° (2008)
Record low-15° (2014)
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 Greenhorn, 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 Greenhorn, 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.