Monthly outlook for Irwin, CO: average high 43.1°, average low 25.1°. That is 2.2° below the climate normal for October. Precipitation is expected on 7 days (about 1.7 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 17 October (55.1°), the coolest 28 October (12.3°).
43.1°/25.1°
Average high / low
−2.2°
Below normal
7 / 4
Wet days / normal
1.7 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
15 October – 24 October
46.6°
48.5°
-1.1°
25 October – 3 November
37.4°
43.3°
-3.3°
4 November – 13 November
at normal
40.1°
—
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).
Fri, 1648° / 20°0
48 °
Irwin, Friday, 16 October
Clear. High 48°, low 20°.
Pressure30.50 inHg
Wind2.4 mph S
Humidity41%
Visibility6.2 mi
Dew point10°
Sat, 1755° / 29°0
55 °
Irwin, Saturday, 17 October
Clear. High 55°, low 29°.
Pressure30.36 inHg
Wind3.2 mph W
Humidity42%
Visibility6.2 mi
Dew point17°
Sun, 1846° / 32°0.07
46 °
Irwin, Sunday, 18 October
Snow. High 46°, low 32°.
Pressure30.21 inHg
Wind1.9 mph SW
Humidity56%
Visibility6.2 mi
Dew point21°
Mon, 1947° / 37°0.31
47 °
Irwin, Monday, 19 October
Light rain. High 47°, low 37°.
Pressure30.15 inHg
Wind5.2 mph W
Humidity69%
Visibility—
Dew point36°
Tue, 2049° / 31°0.03
49 °
Irwin, Tuesday, 20 October
Light rain. High 49°, low 31°.
Pressure30.15 inHg
Wind5.3 mph NE
Humidity55%
Visibility—
Dew point31°
Wed, 2153° / 33°0
53 °
Irwin, Wednesday, 21 October
Clear. High 53°, low 33°.
Pressure30.00 inHg
Wind8.9 mph SE
Humidity43%
Visibility—
Dew point26°
Thu, 2249° / 36°0.08
49 °
Irwin, Thursday, 22 October
Light rain. High 49°, low 36°.
Pressure29.83 inHg
Wind8.1 mph S
Humidity53%
Visibility—
Dew point30°
Fri, 2336° / 21°0.76
36 °
Irwin, Friday, 23 October
Snow. High 36°, low 21°.
Pressure30.00 inHg
Wind9.2 mph NW
Humidity89%
Visibility—
Dew point27°
Sat, 2440° / 17°0
40 °
Irwin, Saturday, 24 October
Partly cloudy. High 40°, low 17°.
Pressure30.27 inHg
Wind4.2 mph S
Humidity67%
Visibility—
Dew point24°
Sun, 2544° / 24°0
44 °
Irwin, Sunday, 25 October
Mostly clear. High 44°, low 24°.
Pressure30.12 inHg
Wind9.8 mph SE
Humidity61%
Visibility—
Dew point25°
Mon, 2647° / 31°0.04
47 °
Irwin, Monday, 26 October
Snow. High 47°, low 31°.
Pressure29.88 inHg
Wind11.2 mph SE
Humidity65%
Visibility—
Dew point30°
Tue, 2732° / 17°0.35
32 °
Irwin, Tuesday, 27 October
Snow. High 32°, low 17°.
Pressure29.83 inHg
Wind10.8 mph S
Humidity63%
Visibility—
Dew point20°
Wed, 2834° / 12°0
34 °
Irwin, Wednesday, 28 October
Clear. High 34°, low 12°.
Pressure30.03 inHg
Wind4.4 mph W
Humidity64%
Visibility—
Dew point19°
Thu, 2937° / 19°0
37 °
Irwin, Thursday, 29 October
Clear. High 37°, low 19°.
Pressure29.88 inHg
Wind10.8 mph W
Humidity41%
Visibility—
Dew point13°
Fri, 3031° / 15°0.01
31 °
Irwin, Friday, 30 October
Light snow. High 31°, low 15°.
Pressure30.27 inHg
Wind5.7 mph W
Humidity40%
Visibility—
Dew point6°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Mon, 0939° / 16°0.11
39 °
Irwin, Monday, 9 November
Climate normal for this date — 60-year average.
Average high39°
Average low16°
Average precipitation0.11 in
Chance of precipitation40%
Record high55° (2016)
Record low-15° (2018)
Tue, 1039° / 15°0.06
39 °
Irwin, Tuesday, 10 November
Climate normal for this date — 60-year average.
Average high39°
Average low15°
Average precipitation0.06 in
Chance of precipitation30%
Record high56° (2016)
Record low-10° (1972)
Wed, 1139° / 15°0.07
39 °
Irwin, Wednesday, 11 November
Climate normal for this date — 60-year average.
Average high39°
Average low15°
Average precipitation0.07 in
Chance of precipitation37%
Record high56° (1989)
Record low-8° (2022)
Thu, 1238° / 14°0.09
38 °
Irwin, Thursday, 12 November
Climate normal for this date — 60-year average.
Average high38°
Average low14°
Average precipitation0.09 in
Chance of precipitation32%
Record high57° (1999)
Record low-17° (2012)
Fri, 1338° / 14°0.06
38 °
Irwin, Friday, 13 November
Climate normal for this date — 60-year average.
Average high38°
Average low14°
Average precipitation0.06 in
Chance of precipitation33%
Record high56° (1999)
Record low-11° (2018)
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.