Monthly outlook for Irwin, CO: average high 52.6°, average low 33.1°. That is 1.8° above the climate normal for October. Precipitation is expected on 6 days (about 1.2 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 11 October (61°), the coolest 15 October (25.4°).
52.6°/33.1°
Average high / low
+1.8°
Above normal
6 / 4
Wet days / normal
1.2 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
10 October – 19 October
53.3°
50.4°
+1.6°
20 October – 29 October
51.4°
46.3°
+2.8°
30 October – 8 November
at normal
41.5°
—
October records over 66 years
69.4°7 October 2020All-time high
-23.8°31 October 2019All-time low
Climate normals and records are computed from the nearest reference point — Crested Butte (6 mi).
Sun, 1161° / 41°0.24
61 °
Irwin, Sunday, 11 October
Rain. High 61°, low 41°.
Pressure29.83 inHg
Wind9.5 mph S
Humidity43%
Visibility6.2 mi
Dew point35°
Mon, 1258° / 38°0.13
58 °
Irwin, Monday, 12 October
Light rain. High 58°, low 38°.
Pressure29.97 inHg
Wind5.7 mph S
Humidity53%
Visibility6.2 mi
Dew point32°
Tue, 1353° / 38°0.16
53 °
Irwin, Tuesday, 13 October
Light rain. High 53°, low 38°.
Pressure29.91 inHg
Wind8.2 mph S
Humidity57%
Visibility6.2 mi
Dew point34°
Wed, 1452° / 28°0.37
52 °
Irwin, Wednesday, 14 October
Snow. High 52°, low 28°.
Pressure29.88 inHg
Wind15.2 mph SE
Humidity49%
Visibility6.2 mi
Dew point28°
Thu, 1545° / 25°0.03
45 °
Irwin, Thursday, 15 October
Light rain. High 45°, low 25°.
Pressure30.21 inHg
Wind3.2 mph W
Humidity71%
Visibility—
Dew point31°
Fri, 1652° / 30°0
52 °
Irwin, Friday, 16 October
Clear. High 52°, low 30°.
Pressure30.30 inHg
Wind6.1 mph NW
Humidity22%
Visibility—
Dew point11°
Sat, 1752° / 32°0
52 °
Irwin, Saturday, 17 October
Clear. High 52°, low 32°.
Pressure30.30 inHg
Wind4.7 mph W
Humidity33%
Visibility—
Dew point20°
Sun, 1852° / 34°0
52 °
Irwin, Sunday, 18 October
Overcast. High 52°, low 34°.
Pressure30.18 inHg
Wind5.6 mph NW
Humidity41%
Visibility—
Dew point26°
Mon, 1952° / 34°0
52 °
Irwin, Monday, 19 October
Partly cloudy. High 52°, low 34°.
Pressure30.09 inHg
Wind7.3 mph W
Humidity31%
Visibility—
Dew point19°
Tue, 2043° / 27°0.08
43 °
Irwin, Tuesday, 20 October
Light rain. High 43°, low 27°.
Pressure29.97 inHg
Wind21.5 mph W
Humidity53%
Visibility—
Dew point26°
Wed, 2151° / 27°0
51 °
Irwin, Wednesday, 21 October
Clear. High 51°, low 27°.
Pressure30.15 inHg
Wind4.4 mph N
Humidity15%
Visibility—
Dew point1°
Thu, 2254° / 33°0
54 °
Irwin, Thursday, 22 October
Partly cloudy. High 54°, low 33°.
Pressure30.12 inHg
Wind4.5 mph NW
Humidity20%
Visibility—
Dew point10°
Fri, 2354° / 33°0
54 °
Irwin, Friday, 23 October
Clear. High 54°, low 33°.
Pressure30.12 inHg
Wind4.3 mph W
Humidity27%
Visibility—
Dew point17°
Sat, 2454° / 35°0
54 °
Irwin, Saturday, 24 October
Overcast. High 54°, low 35°.
Pressure30.15 inHg
Wind5.6 mph NW
Humidity33%
Visibility—
Dew point22°
Sun, 2553° / 35°0
53 °
Irwin, Sunday, 25 October
Clear. High 53°, low 35°.
Pressure30.21 inHg
Wind5.5 mph NW
Humidity35%
Visibility—
Dew point23°
From day 17 onward the outlook is built from 60-year climate statistics
Mon, 2645° / 23°0.08
45 °
Irwin, Monday, 26 October
Climate normal for this date — 60-year average.
Average high45°
Average low23°
Average precipitation0.08 in
Chance of precipitation32%
Record high60° (1977)
Record low-12° (1997)
Tue, 2745° / 22°0.05
45 °
Irwin, Tuesday, 27 October
Climate normal for this date — 60-year average.
Average high45°
Average low22°
Average precipitation0.05 in
Chance of precipitation20%
Record high62° (2024)
Record low-11° (2020)
Wed, 2845° / 23°0.07
45 °
Irwin, Wednesday, 28 October
Climate normal for this date — 60-year average.
Average high45°
Average low23°
Average precipitation0.07 in
Chance of precipitation30%
Record high57° (2016)
Record low-6° (2010)
Thu, 2944° / 21°0.09
44 °
Irwin, Thursday, 29 October
Climate normal for this date — 60-year average.
Average high44°
Average low21°
Average precipitation0.09 in
Chance of precipitation35%
Record high58° (1964)
Record low-7° (1980)
Fri, 3042° / 20°0.06
42 °
Irwin, Friday, 30 October
Climate normal for this date — 60-year average.
Average high42°
Average low20°
Average precipitation0.06 in
Chance of precipitation35%
Record high58° (1962)
Record low-17° (2023)
Sat, 3142° / 19°0.08
42 °
Irwin, Saturday, 31 October
Climate normal for this date — 60-year average.
Average high42°
Average low19°
Average precipitation0.08 in
Chance of precipitation43%
Record high57° (1999)
Record low-24° (2019)
Sun, 0141° / 20°0.05
41 °
Irwin, Sunday, 1 November
Climate normal for this date — 60-year average.
Average high41°
Average low20°
Average precipitation0.05 in
Chance of precipitation33%
Record high56° (2020)
Record low-12° (1979)
Mon, 0242° / 18°0.07
42 °
Irwin, Monday, 2 November
Climate normal for this date — 60-year average.
Average high42°
Average low18°
Average precipitation0.07 in
Chance of precipitation25%
Record high59° (2025)
Record low-17° (2004)
Tue, 0342° / 17°0.06
42 °
Irwin, Tuesday, 3 November
Climate normal for this date — 60-year average.
Average high42°
Average low17°
Average precipitation0.06 in
Chance of precipitation23%
Record high58° (2025)
Record low-13° (1982)
Wed, 0442° / 17°0.04
42 °
Irwin, Wednesday, 4 November
Climate normal for this date — 60-year average.
Average high42°
Average low17°
Average precipitation0.04 in
Chance of precipitation27%
Record high56° (1983)
Record low-12° (1970)
Thu, 0542° / 17°0.05
42 °
Irwin, Thursday, 5 November
Climate normal for this date — 60-year average.
Average high42°
Average low17°
Average precipitation0.05 in
Chance of precipitation27%
Record high57° (2020)
Record low-7° (1998)
Fri, 0641° / 17°0.04
41 °
Irwin, Friday, 6 November
Climate normal for this date — 60-year average.
Average high41°
Average low17°
Average precipitation0.04 in
Chance of precipitation20%
Record high55° (1999)
Record low-16° (1993)
Sat, 0742° / 17°0.03
42 °
Irwin, Saturday, 7 November
Climate normal for this date — 60-year average.
Average high42°
Average low17°
Average precipitation0.03 in
Chance of precipitation18%
Record high55° (1999)
Record low-20° (2000)
Sun, 0840° / 19°0.08
40 °
Irwin, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high40°
Average low19°
Average precipitation0.08 in
Chance of precipitation28%
Record high55° (1978)
Record low-15° (2000)
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 Irwin, 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 Irwin, 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.