Monthly outlook for Granby, CO: average high 57.2°, average low 32.6°. That is 5.5° above the climate normal for October. Precipitation is expected on 6 days (about 0.6 inches), against a normal of 4 days and 0.8 inches. The warmest day looks like 17 October (65.8°), the coolest 31 October (21.7°).
57.2°/32.6°
Average high / low
+5.5°
Above normal
6 / 4
Wet days / normal
0.6 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
17 October – 26 October
61°
49.4°
+6.4°
27 October – 5 November
50.9°
43.1°
+4.4°
6 November – 15 November
at normal
39.6°
—
October records over 66 years
73.4°1 October 2010All-time high
-6.9°30 October 1993All-time low
Sun, 1863° / 30°0
63 °
Granby, Sunday, 18 October
Overcast. High 63°, low 30°.
Pressure30.12 inHg
Wind0.9 mph S
Humidity36%
Visibility6.2 mi
Dew point23°
Mon, 1961° / 31°0
61 °
Granby, Monday, 19 October
Mostly clear. High 61°, low 31°.
Pressure30.06 inHg
Wind1.3 mph SW
Humidity38%
Visibility6.2 mi
Dew point29°
Tue, 2061° / 38°0
61 °
Granby, Tuesday, 20 October
Mostly clear. High 61°, low 38°.
Pressure30.09 inHg
Wind2.8 mph W
Humidity43%
Visibility6.2 mi
Dew point34°
Wed, 2165° / 39°0
65 °
Granby, Wednesday, 21 October
Clear. High 65°, low 39°.
Pressure30.18 inHg
Wind2.3 mph SE
Humidity37%
Visibility6.2 mi
Dew point32°
Thu, 2258° / 42°0.09
58 °
Granby, Thursday, 22 October
Light rain. High 58°, low 42°.
Pressure30.15 inHg
Wind3.4 mph NE
Humidity57%
Visibility—
Dew point40°
Fri, 2366° / 42°0.03
66 °
Granby, Friday, 23 October
Light rain. High 66°, low 42°.
Pressure29.80 inHg
Wind5.2 mph SW
Humidity39%
Visibility—
Dew point34°
Sat, 2455° / 37°0.11
55 °
Granby, Saturday, 24 October
Light rain. High 55°, low 37°.
Pressure29.97 inHg
Wind3.9 mph E
Humidity36%
Visibility—
Dew point26°
Sun, 2555° / 31°0.05
55 °
Granby, Sunday, 25 October
Light rain. High 55°, low 31°.
Pressure30.12 inHg
Wind7.3 mph SE
Humidity51%
Visibility—
Dew point31°
Mon, 2660° / 31°0
60 °
Granby, Monday, 26 October
Clear. High 60°, low 31°.
Pressure30.09 inHg
Wind5.6 mph E
Humidity32%
Visibility—
Dew point23°
Tue, 2763° / 34°0
63 °
Granby, Tuesday, 27 October
Clear. High 63°, low 34°.
Pressure29.85 inHg
Wind8.2 mph S
Humidity15%
Visibility—
Dew point11°
Wed, 2846° / 34°0.24
46 °
Granby, Wednesday, 28 October
Snow. High 46°, low 34°.
Pressure29.88 inHg
Wind19 mph W
Humidity63%
Visibility—
Dew point33°
Thu, 2950° / 31°0
50 °
Granby, Thursday, 29 October
Overcast. High 50°, low 31°.
Pressure29.85 inHg
Wind16.8 mph W
Humidity39%
Visibility—
Dew point22°
Fri, 3046° / 24°0.08
46 °
Granby, Friday, 30 October
Light snow. High 46°, low 24°.
Pressure29.68 inHg
Wind20.8 mph W
Humidity44%
Visibility—
Dew point23°
Sat, 3153° / 22°0
53 °
Granby, Saturday, 31 October
Mostly clear. High 53°, low 22°.
Pressure29.91 inHg
Wind8.2 mph NW
Humidity38%
Visibility—
Dew point19°
Sun, 0148° / 28°0.04
48 °
Granby, Sunday, 1 November
Snow. High 48°, low 28°.
Pressure29.91 inHg
Wind16.2 mph W
Humidity43%
Visibility—
Dew point24°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sun, 1537° / 15°0.05
37 °
Granby, Sunday, 15 November
Climate normal for this date — 60-year average.
Average high37°
Average low15°
Average precipitation0.05 in
Chance of precipitation30%
Record high59° (1999)
Record low-19° (1997)
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.