Monthly outlook for Rinn, CO: average high 65.2°, average low 47°. That is 2.1° above the climate normal for October. Precipitation is expected on 4 days (about 1.3 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 12 October (78.8°), the coolest 17 October (38.9°).
65.2°/47°
Average high / low
+2.1°
Above normal
4 / 3
Wet days / normal
1.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
12 October – 21 October
65.5°
62.5°
+1.7°
22 October – 31 October
64.8°
57.6°
+4°
1 November – 10 November
at normal
52.8°
—
October records over 66 years
84.6°2 October 2024All-time high
-1.5°27 October 2020All-time low
Climate normals and records are computed from the nearest reference point — Longmont (6 mi).
Tue, 1364° / 55°0.1
64 °
Rinn, Tuesday, 13 October
Light rain. High 64°, low 55°.
Pressure29.91 inHg
Wind5.2 mph SE
Humidity71%
Visibility4.5 mi
Dew point49°
Wed, 1454° / 48°0.43
54 °
Rinn, Wednesday, 14 October
Rain. High 54°, low 48°.
Pressure30.12 inHg
Wind6.4 mph E
Humidity85%
Visibility4.6 mi
Dew point45°
Thu, 1548° / 43°0.54
48 °
Rinn, Thursday, 15 October
Rain. High 48°, low 43°.
Pressure30.36 inHg
Wind15.5 mph N
Humidity72%
Visibility6.2 mi
Dew point40°
Fri, 1657° / 42°0.03
57 °
Rinn, Friday, 16 October
Light rain. High 57°, low 42°.
Pressure30.65 inHg
Wind6 mph SE
Humidity46%
Visibility—
Dew point31°
Sat, 1765° / 39°0
65 °
Rinn, Saturday, 17 October
Overcast. High 65°, low 39°.
Pressure30.09 inHg
Wind7.8 mph W
Humidity50%
Visibility—
Dew point37°
Sun, 1873° / 45°0
73 °
Rinn, Sunday, 18 October
Clear. High 73°, low 45°.
Pressure29.88 inHg
Wind6.2 mph SW
Humidity17%
Visibility—
Dew point19°
Mon, 1972° / 48°0
72 °
Rinn, Monday, 19 October
Mostly clear. High 72°, low 48°.
Pressure30.00 inHg
Wind9.4 mph E
Humidity22%
Visibility—
Dew point26°
Tue, 2073° / 46°0
73 °
Rinn, Tuesday, 20 October
Clear. High 73°, low 46°.
Pressure29.83 inHg
Wind7.3 mph NW
Humidity25%
Visibility—
Dew point27°
Wed, 2170° / 48°0
70 °
Rinn, Wednesday, 21 October
Overcast. High 70°, low 48°.
Pressure29.80 inHg
Wind4.7 mph N
Humidity25%
Visibility—
Dew point28°
Thu, 2271° / 47°0
71 °
Rinn, Thursday, 22 October
Clear. High 71°, low 47°.
Pressure30.00 inHg
Wind8.3 mph N
Humidity40%
Visibility—
Dew point37°
Fri, 2354° / 51°0.17
54 °
Rinn, Friday, 23 October
Light rain. High 54°, low 51°.
Pressure30.33 inHg
Wind5.4 mph NW
Humidity92%
Visibility—
Dew point49°
Sat, 2461° / 47°0.04
61 °
Rinn, Saturday, 24 October
Light rain. High 61°, low 47°.
Pressure29.85 inHg
Wind21.4 mph W
Humidity25%
Visibility—
Dew point23°
Sun, 2565° / 44°0
65 °
Rinn, Sunday, 25 October
Clear. High 65°, low 44°.
Pressure30.21 inHg
Wind8.9 mph SE
Humidity31%
Visibility—
Dew point28°
Mon, 2667° / 43°0
67 °
Rinn, Monday, 26 October
Clear. High 67°, low 43°.
Pressure30.09 inHg
Wind5.2 mph NW
Humidity30%
Visibility—
Dew point28°
Tue, 2771° / 44°0
71 °
Rinn, Tuesday, 27 October
Clear. High 71°, low 44°.
Pressure29.91 inHg
Wind6.6 mph NW
Humidity19%
Visibility—
Dew point19°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2858° / 33°0.06
58 °
Rinn, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high58°
Average low33°
Average precipitation0.06 in
Chance of precipitation20%
Record high77° (2016)
Record low9° (2019)
Thu, 2956° / 33°0.06
56 °
Rinn, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high56°
Average low33°
Average precipitation0.06 in
Chance of precipitation27%
Record high77° (1968)
Record low8° (1993)
Fri, 3053° / 31°0.05
53 °
Rinn, Friday, 30 October
Climate normal for this date — 60-year average.
Average high53°
Average low31°
Average precipitation0.05 in
Chance of precipitation27%
Record high75° (1968)
Record low0° (1993)
Sat, 3153° / 31°0.04
53 °
Rinn, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high53°
Average low31°
Average precipitation0.04 in
Chance of precipitation23%
Record high75° (2016)
Record low-1° (2019)
Sun, 0152° / 31°0.06
52 °
Rinn, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high52°
Average low31°
Average precipitation0.06 in
Chance of precipitation27%
Record high71° (1988)
Record low13° (1991)
Mon, 0252° / 29°0.07
52 °
Rinn, Monday, 2 November
Climate normal for this date — 60-year average.
Average high52°
Average low29°
Average precipitation0.07 in
Chance of precipitation27%
Record high78° (2025)
Record low4° (1991)
Tue, 0352° / 29°0.04
52 °
Rinn, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high52°
Average low29°
Average precipitation0.04 in
Chance of precipitation22%
Record high71° (2015)
Record low-7° (1991)
Wed, 0454° / 30°0.03
54 °
Rinn, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high54°
Average low30°
Average precipitation0.03 in
Chance of precipitation15%
Record high73° (2020)
Record low6° (2002)
Thu, 0553° / 30°0.04
53 °
Rinn, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high53°
Average low30°
Average precipitation0.04 in
Chance of precipitation18%
Record high70° (2023)
Record low4° (1967)
Fri, 0654° / 30°0.03
54 °
Rinn, Friday, 6 November
Climate normal for this date — 60-year average.
Average high54°
Average low30°
Average precipitation0.03 in
Chance of precipitation17%
Record high74° (2010)
Record low5° (1967)
Sat, 0754° / 30°0.03
54 °
Rinn, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high54°
Average low30°
Average precipitation0.03 in
Chance of precipitation13%
Record high73° (2021)
Record low10° (1967)
Sun, 0853° / 30°0.04
53 °
Rinn, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high53°
Average low30°
Average precipitation0.04 in
Chance of precipitation20%
Record high72° (2006)
Record low10° (1993)
Mon, 0951° / 29°0.06
51 °
Rinn, Monday, 9 November
Climate normal for this date — 60-year average.
Average high51°
Average low29°
Average precipitation0.06 in
Chance of precipitation23%
Record high69° (2016)
Record low13° (1986)
Tue, 1051° / 27°0.03
51 °
Rinn, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high51°
Average low27°
Average precipitation0.03 in
Chance of precipitation20%
Record high69° (2005)
Record low8° (1986)
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 Rinn, 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 Rinn, 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.