Monthly outlook for Irwin, CO: average high 46.9°, average low 28.8°. That is 0.3° below the climate normal for October. Precipitation is expected on 6 days (about 1.9 inches), against a normal of 4 days and 1.0 inches. The warmest day looks like 18 October (57.3°), the coolest 16 October (19.1°).
46.9°/28.8°
Average high / low
−0.3°
Below normal
6 / 4
Wet days / normal
1.9 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
14 October – 23 October
48.1°
49°
-0.5°
24 October – 2 November
44.9°
43.7°
+0.7°
3 November – 12 November
at normal
40.4°
—
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).
Thu, 1543° / 25°0
43 °
Irwin, Thursday, 15 October
Light snow. High 43°, low 25°.
Pressure30.36 inHg
Wind1.9 mph NE
Humidity72%
Visibility6.2 mi
Dew point26°
Fri, 1654° / 19°0
54 °
Irwin, Friday, 16 October
Clear. High 54°, low 19°.
Pressure30.50 inHg
Wind3.1 mph S
Humidity38%
Visibility6.2 mi
Dew point4°
Sat, 1754° / 31°0
54 °
Irwin, Saturday, 17 October
Clear. High 54°, low 31°.
Pressure30.39 inHg
Wind4.2 mph W
Humidity43%
Visibility6.2 mi
Dew point15°
Sun, 1857° / 31°0
57 °
Irwin, Sunday, 18 October
Overcast. High 57°, low 31°.
Pressure30.18 inHg
Wind1.9 mph W
Humidity41%
Visibility6.2 mi
Dew point18°
Mon, 1953° / 36°0.02
53 °
Irwin, Monday, 19 October
Light rain. High 53°, low 36°.
Pressure30.18 inHg
Wind4.9 mph SE
Humidity51%
Visibility—
Dew point31°
Tue, 2042° / 33°0.11
42 °
Irwin, Tuesday, 20 October
Light rain. High 42°, low 33°.
Pressure30.06 inHg
Wind5.6 mph SE
Humidity81%
Visibility—
Dew point35°
Wed, 2149° / 37°0.22
49 °
Irwin, Wednesday, 21 October
Rain. High 49°, low 37°.
Pressure30.09 inHg
Wind5.2 mph SE
Humidity59%
Visibility—
Dew point31°
Thu, 2252° / 34°0.11
52 °
Irwin, Thursday, 22 October
Light rain. High 52°, low 34°.
Pressure30.03 inHg
Wind7.5 mph SE
Humidity47%
Visibility—
Dew point27°
Fri, 2340° / 29°0.71
40 °
Irwin, Friday, 23 October
Snow. High 40°, low 29°.
Pressure29.88 inHg
Wind6.4 mph NW
Humidity97%
Visibility—
Dew point33°
Sat, 2438° / 22°0.15
38 °
Irwin, Saturday, 24 October
Snow. High 38°, low 22°.
Pressure30.27 inHg
Wind5.3 mph NW
Humidity71%
Visibility—
Dew point26°
Sun, 2545° / 21°0
45 °
Irwin, Sunday, 25 October
Clear. High 45°, low 21°.
Pressure30.36 inHg
Wind3.4 mph E
Humidity47%
Visibility—
Dew point22°
Mon, 2644° / 27°0
44 °
Irwin, Monday, 26 October
Overcast. High 44°, low 27°.
Pressure30.15 inHg
Wind4.7 mph SE
Humidity38%
Visibility—
Dew point18°
Tue, 2742° / 27°0
42 °
Irwin, Tuesday, 27 October
Partly cloudy. High 42°, low 27°.
Pressure29.97 inHg
Wind7.7 mph N
Humidity48%
Visibility—
Dew point21°
Wed, 2848° / 28°0
48 °
Irwin, Wednesday, 28 October
Clear. High 48°, low 28°.
Pressure29.97 inHg
Wind5.1 mph NW
Humidity37%
Visibility—
Dew point19°
Thu, 2953° / 32°0
53 °
Irwin, Thursday, 29 October
Clear. High 53°, low 32°.
Pressure30.09 inHg
Wind3.7 mph NW
Humidity33%
Visibility—
Dew point20°
From day 17 onward the outlook is built from 60-year climate statistics
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)
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)
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.