Monthly outlook for Granby, CO: average high 55.8°, average low 32.3°. That is 4.3° above the climate normal for October. Precipitation is expected on 6 days (about 0.9 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 21 October (64°), the coolest 26 October (22.9°).
55.8°/32.3°
Average high / low
+4.3°
Above normal
6 / 4
Wet days / normal
0.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
16 October – 25 October
56.6°
49.9°
+3.7°
26 October – 4 November
54.6°
43.6°
+6.1°
5 November – 14 November
at normal
40.1°
—
October records over 66 years
73.4°1 October 2010All-time high
-6.9°30 October 1993All-time low
Sat, 1763° / 32°0
63 °
Granby, Saturday, 17 October
Clear. High 63°, low 32°.
Pressure30.36 inHg
Wind0.9 mph SW
Humidity36%
Visibility6.2 mi
Dew point19°
Sun, 1862° / 36°0
62 °
Granby, Sunday, 18 October
Partly cloudy. High 62°, low 36°.
Pressure30.12 inHg
Wind0.7 mph SW
Humidity36%
Visibility6.2 mi
Dew point23°
Mon, 1962° / 38°0.04
62 °
Granby, Monday, 19 October
Light rain. High 62°, low 38°.
Pressure30.06 inHg
Wind2 mph E
Humidity40%
Visibility6.2 mi
Dew point31°
Tue, 2060° / 38°0.01
60 °
Granby, Tuesday, 20 October
Light rain. High 60°, low 38°.
Pressure30.06 inHg
Wind2.3 mph W
Humidity49%
Visibility6.2 mi
Dew point36°
Wed, 2164° / 37°0.08
64 °
Granby, Wednesday, 21 October
Light rain. High 64°, low 37°.
Pressure30.15 inHg
Wind4.7 mph N
Humidity35%
Visibility—
Dew point30°
Thu, 2262° / 42°0.13
62 °
Granby, Thursday, 22 October
Light rain. High 62°, low 42°.
Pressure29.74 inHg
Wind9.9 mph W
Humidity40%
Visibility—
Dew point35°
Fri, 2350° / 31°0.22
50 °
Granby, Friday, 23 October
Snow. High 50°, low 31°.
Pressure29.88 inHg
Wind9.5 mph W
Humidity48%
Visibility—
Dew point26°
Sat, 2442° / 27°0.22
42 °
Granby, Saturday, 24 October
Snow. High 42°, low 27°.
Pressure29.97 inHg
Wind7.3 mph E
Humidity60%
Visibility—
Dew point28°
Sun, 2544° / 23°0.02
44 °
Granby, Sunday, 25 October
Snow. High 44°, low 23°.
Pressure30.21 inHg
Wind6.6 mph W
Humidity65%
Visibility—
Dew point27°
Mon, 2655° / 23°0
55 °
Granby, Monday, 26 October
Mostly clear. High 55°, low 23°.
Pressure30.12 inHg
Wind5.2 mph E
Humidity29%
Visibility—
Dew point17°
Tue, 2759° / 33°0
59 °
Granby, Tuesday, 27 October
Partly cloudy. High 59°, low 33°.
Pressure29.71 inHg
Wind9.2 mph S
Humidity39%
Visibility—
Dew point30°
Wed, 2852° / 37°0
52 °
Granby, Wednesday, 28 October
Partly cloudy. High 52°, low 37°.
Pressure29.80 inHg
Wind22.6 mph W
Humidity36%
Visibility—
Dew point23°
Thu, 2953° / 27°0
53 °
Granby, Thursday, 29 October
Clear. High 53°, low 27°.
Pressure30.12 inHg
Wind14.7 mph W
Humidity29%
Visibility—
Dew point15°
Fri, 3059° / 35°0
59 °
Granby, Friday, 30 October
Overcast. High 59°, low 35°.
Pressure30.00 inHg
Wind9.1 mph NW
Humidity39%
Visibility—
Dew point28°
Sat, 3148° / 35°0.18
48 °
Granby, Saturday, 31 October
Snow. High 48°, low 35°.
Pressure29.80 inHg
Wind13.8 mph W
Humidity63%
Visibility—
Dew point35°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 0141° / 22°0.07
41 °
Granby, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high41°
Average low22°
Average precipitation0.07 in
Chance of precipitation40%
Record high56° (2008)
Record low8° (1991)
Mon, 0242° / 21°0.08
42 °
Granby, Monday, 2 November
Climate normal for this date — 60-year average.
Average high42°
Average low21°
Average precipitation0.08 in
Chance of precipitation32%
Record high57° (2008)
Record low-2° (2004)
Tue, 0342° / 20°0.06
42 °
Granby, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high42°
Average low20°
Average precipitation0.06 in
Chance of precipitation27%
Record high56° (2016)
Record low-6° (1991)
Wed, 0442° / 21°0.04
42 °
Granby, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high42°
Average low21°
Average precipitation0.04 in
Chance of precipitation22%
Record high58° (1983)
Record low-15° (1970)
Thu, 0542° / 21°0.06
42 °
Granby, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high42°
Average low21°
Average precipitation0.06 in
Chance of precipitation40%
Record high57° (1975)
Record low-6° (1961)
Fri, 0642° / 21°0.04
42 °
Granby, Friday, 6 November
Climate normal for this date — 60-year average.
Average high42°
Average low21°
Average precipitation0.04 in
Chance of precipitation23%
Record high57° (1999)
Record low2° (1993)
Sat, 0743° / 20°0.02
43 °
Granby, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high43°
Average low20°
Average precipitation0.02 in
Chance of precipitation15%
Record high59° (1999)
Record low-4° (2000)
Sun, 0842° / 22°0.07
42 °
Granby, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high42°
Average low22°
Average precipitation0.07 in
Chance of precipitation33%
Record high58° (2004)
Record low2° (1993)
Mon, 0940° / 20°0.09
40 °
Granby, Monday, 9 November
Climate normal for this date — 60-year average.
Average high40°
Average low20°
Average precipitation0.09 in
Chance of precipitation33%
Record high56° (2016)
Record low3° (2018)
Tue, 1040° / 19°0.06
40 °
Granby, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high40°
Average low19°
Average precipitation0.06 in
Chance of precipitation28%
Record high58° (1980)
Record low0° (2000)
Wed, 1139° / 18°0.06
39 °
Granby, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high39°
Average low18°
Average precipitation0.06 in
Chance of precipitation33%
Record high58° (1980)
Record low0° (1986)
Thu, 1238° / 16°0.06
38 °
Granby, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high38°
Average low16°
Average precipitation0.06 in
Chance of precipitation32%
Record high57° (1999)
Record low-5° (1972)
Fri, 1339° / 17°0.05
39 °
Granby, Friday, 13 November
Climate normal for this date — 60-year average.
Average high39°
Average low17°
Average precipitation0.05 in
Chance of precipitation35%
Record high54° (1999)
Record low-7° (2000)
Sat, 1438° / 17°0.07
38 °
Granby, Saturday, 14 November
Climate normal for this date — 60-year average.
Average high38°
Average low17°
Average precipitation0.07 in
Chance of precipitation33%
Record high60° (1999)
Record low-8° (1961)
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 Granby, CO 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 Granby, CO 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.