Monthly outlook for Irwin, CO: average high 52.2°, average low 32.1°. That is 1.4° above the climate normal for October. Precipitation is expected on 7 days (about 2.3 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 9 October (64.3°), the coolest 15 October (16.4°).
52.2°/32.1°
Average high / low
+1.4°
Above normal
7 / 4
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
9 October – 18 October
52.6°
50.7°
+1°
19 October – 28 October
51.6°
46.9°
+2.6°
29 October – 7 November
at normal
41.8°
—
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).
Sat, 1059° / 34°0.4
59 °
Irwin, Saturday, 10 October
Rain. High 59°, low 34°.
Pressure29.97 inHg
Wind1 mph SE
Humidity78%
Visibility6.2 mi
Dew point41°
Sun, 1159° / 38°0.68
59 °
Irwin, Sunday, 11 October
Rain. High 59°, low 38°.
Pressure29.83 inHg
Wind7.6 mph S
Humidity59%
Visibility3.2 mi
Dew point41°
Mon, 1257° / 35°0.01
57 °
Irwin, Monday, 12 October
Light rain. High 57°, low 35°.
Pressure29.91 inHg
Wind7.5 mph SW
Humidity42%
Visibility6.2 mi
Dew point25°
Tue, 1353° / 39°0.2
53 °
Irwin, Tuesday, 13 October
Light rain. High 53°, low 39°.
Pressure29.94 inHg
Wind6.1 mph S
Humidity67%
Visibility5.0 mi
Dew point35°
Wed, 1440° / 23°0.7
40 °
Irwin, Wednesday, 14 October
Snow. High 40°, low 23°.
Pressure30.06 inHg
Wind6.4 mph SE
Humidity97%
Visibility—
Dew point34°
Thu, 1541° / 16°0
41 °
Irwin, Thursday, 15 October
Overcast. High 41°, low 16°.
Pressure30.21 inHg
Wind6.8 mph NW
Humidity64%
Visibility—
Dew point22°
Fri, 1650° / 26°0
50 °
Irwin, Friday, 16 October
Clear. High 50°, low 26°.
Pressure30.36 inHg
Wind5.7 mph NW
Humidity27%
Visibility—
Dew point14°
Sat, 1751° / 29°0
51 °
Irwin, Saturday, 17 October
Clear. High 51°, low 29°.
Pressure30.36 inHg
Wind5 mph NW
Humidity38%
Visibility—
Dew point23°
Sun, 1853° / 32°0
53 °
Irwin, Sunday, 18 October
Clear. High 53°, low 32°.
Pressure30.21 inHg
Wind4.9 mph NW
Humidity28%
Visibility—
Dew point17°
Mon, 1955° / 33°0
55 °
Irwin, Monday, 19 October
Clear. High 55°, low 33°.
Pressure30.15 inHg
Wind3.1 mph SW
Humidity29%
Visibility—
Dew point19°
Tue, 2054° / 35°0
54 °
Irwin, Tuesday, 20 October
Clear. High 54°, low 35°.
Pressure30.18 inHg
Wind4.3 mph NW
Humidity32%
Visibility—
Dew point21°
Wed, 2154° / 35°0
54 °
Irwin, Wednesday, 21 October
Clear. High 54°, low 35°.
Pressure30.15 inHg
Wind3.2 mph SW
Humidity33%
Visibility—
Dew point22°
Thu, 2251° / 34°0
51 °
Irwin, Thursday, 22 October
Clear. High 51°, low 34°.
Pressure30.09 inHg
Wind9.2 mph W
Humidity36%
Visibility—
Dew point22°
Fri, 2345° / 35°0.19
45 °
Irwin, Friday, 23 October
Light rain. High 45°, low 35°.
Pressure29.94 inHg
Wind4.5 mph W
Humidity71%
Visibility—
Dew point33°
Sat, 2450° / 33°0.11
50 °
Irwin, Saturday, 24 October
Light rain. High 50°, low 33°.
Pressure29.91 inHg
Wind6.3 mph S
Humidity50%
Visibility—
Dew point28°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2546° / 24°0.07
46 °
Irwin, Sunday, 25 October
Climate normal for this date — 60-year average.
Average high46°
Average low24°
Average precipitation0.07 in
Chance of precipitation35%
Record high60° (2014)
Record low-6° (1975)
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)
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.