As of 01:21 MDT

Weather in Chester, CO

39°

Chester, Sunday, 18 October, 01:21

Overcast. Feels like 28°. High 57°, low 33°.

Pressure30.30 inHg

Wind23 mph W

Humidity64%

Visibility6.2 mi

Dew point28°

See detailed hourly forecast

Monthly outlook for Chester, CO: average high 48.2°, average low 30.3°. That is 1.4° above the climate normal for October. Precipitation is expected on 6 days (about 1.0 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 21 October (59.5°), the coolest 1 November (20.1°).

48.2°/30.3°

Average high / low

+1.4°

Above normal

6 / 3

Wet days / normal

1.0 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
18 October – 27 October	51.7°	47.6°	+2.3°
28 October – 6 November	42.4°	42.2°	+0.1°
7 November – 16 November	at normal	39°	—

October records over 66 years

69.1°1 October 2015All-time high

-14.4°28 October 1970All-time low

Climate normals and records are computed from the nearest reference point — Bonanza (10 mi).

Mon, 1953° / 35°

0.1

53 °

Chester, Monday, 19 October

Light rain. High 53°, low 35°.

Pressure30.18 inHg

Wind4.1 mph SW

Humidity70%

Visibility6.2 mi

Dew point38°

Tue, 2057° / 36°

57 °

Chester, Tuesday, 20 October

Partly cloudy. High 57°, low 36°.

Pressure30.18 inHg

Wind6.5 mph W

Humidity53%

Visibility6.2 mi

Dew point31°

Wed, 2159° / 38°

0.06

59 °

Chester, Wednesday, 21 October

Light rain. High 59°, low 38°.

Pressure30.24 inHg

Wind4.5 mph S

Humidity45%

Visibility6.2 mi

Dew point32°

Thu, 2257° / 44°

0.19

57 °

Chester, Thursday, 22 October

Light rain. High 57°, low 44°.

Pressure30.15 inHg

Wind7.1 mph S

Humidity65%

Visibility—

Dew point43°

Fri, 2351° / 32°

0.27

51 °

Chester, Friday, 23 October

Rain. High 51°, low 32°.

Pressure29.88 inHg

Wind17.5 mph SW

Humidity62%

Visibility—

Dew point37°

Sat, 2447° / 29°

47 °

Chester, Saturday, 24 October

Clear. High 47°, low 29°.

Pressure30.12 inHg

Wind10.2 mph SE

Humidity24%

Visibility—

Dew point9°

Sun, 2542° / 30°

42 °

Chester, Sunday, 25 October

Overcast. High 42°, low 30°.

Pressure30.36 inHg

Wind5.9 mph E

Humidity56%

Visibility—

Dew point24°

Mon, 2643° / 28°

43 °

Chester, Monday, 26 October

Overcast. High 43°, low 28°.

Pressure30.12 inHg

Wind7.7 mph S

Humidity61%

Visibility—

Dew point28°

Tue, 2752° / 34°

52 °

Chester, Tuesday, 27 October

Overcast. High 52°, low 34°.

Pressure30.00 inHg

Wind9 mph SW

Humidity49%

Visibility—

Dew point27°

Wed, 2845° / 29°

0.15

45 °

Chester, Wednesday, 28 October

Snow. High 45°, low 29°.

Pressure29.80 inHg

Wind12.8 mph NW

Humidity44%

Visibility—

Dew point23°

Thu, 2940° / 27°

0.02

40 °

Chester, Thursday, 29 October

Light snow. High 40°, low 27°.

Pressure30.03 inHg

Wind9.2 mph W

Humidity61%

Visibility—

Dew point25°

Fri, 3043° / 24°

43 °

Chester, Friday, 30 October

Clear. High 43°, low 24°.

Pressure29.91 inHg

Wind6.2 mph SW

Humidity32%

Visibility—

Dew point12°

Sat, 3135° / 21°

0.19

35 °

Chester, Saturday, 31 October

Snow. High 35°, low 21°.

Pressure29.77 inHg

Wind28.9 mph W

Humidity70%

Visibility—

Dew point24°

Sun, 0148° / 20°

48 °

Chester, Sunday, 1 November

Clear. High 48°, low 20°.

Pressure30.03 inHg

Wind7.2 mph NW

Humidity40%

Visibility—

Dew point19°

Mon, 0242° / 25°

42 °

Chester, Monday, 2 November

Overcast. High 42°, low 25°.

Pressure29.85 inHg

Wind6.2 mph S

Humidity55%

Visibility—

Dew point25°

From day 17 onward the outlook is built from 60-year climate statistics

Tue, 0341° / 18°

0.04

41 °

Chester, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high41°

Average low18°

Average precipitation0.04 in

Chance of precipitation13%

Record high52° (1983)

Record low-19° (1991)

Wed, 0442° / 18°

0.01

42 °

Chester, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high42°

Average low18°

Average precipitation0.01 in

Chance of precipitation10%

Record high54° (1983)

Record low-12° (1970)

Thu, 0542° / 18°

0.02

42 °

Chester, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high42°

Average low18°

Average precipitation0.02 in

Chance of precipitation13%

Record high55° (1975)

Record low-9° (1974)

Fri, 0642° / 18°

0.02

42 °

Chester, Friday, 6 November

Climate normal for this date — 60-year average.

Average high42°

Average low18°

Average precipitation0.02 in

Chance of precipitation12%

Record high56° (2010)

Record low-15° (1961)

Sat, 0742° / 19°

0.02

42 °

Chester, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high42°

Average low19°

Average precipitation0.02 in

Chance of precipitation13%

Record high56° (2006)

Record low-13° (2000)

Sun, 0841° / 19°

0.04

41 °

Chester, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high41°

Average low19°

Average precipitation0.04 in

Chance of precipitation25%

Record high57° (2006)

Record low-12° (1993)

Mon, 0940° / 18°

0.06

40 °

Chester, Monday, 9 November

Climate normal for this date — 60-year average.

Average high40°

Average low18°

Average precipitation0.06 in

Chance of precipitation28%

Record high55° (2016)

Record low-14° (1986)

Tue, 1039° / 17°

0.02

39 °

Chester, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high39°

Average low17°

Average precipitation0.02 in

Chance of precipitation15%

Record high54° (1980)

Record low-10° (2011)

Wed, 1138° / 17°

0.05

38 °

Chester, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high38°

Average low17°

Average precipitation0.05 in

Chance of precipitation20%

Record high56° (1989)

Record low-7° (1986)

Thu, 1238° / 15°

0.05

38 °

Chester, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high38°

Average low15°

Average precipitation0.05 in

Chance of precipitation20%

Record high56° (1999)

Record low-16° (2000)

Fri, 1339° / 16°

0.03

39 °

Chester, Friday, 13 November

Climate normal for this date — 60-year average.

Average high39°

Average low16°

Average precipitation0.03 in

Chance of precipitation20%

Record high56° (1999)

Record low-16° (2000)

Sat, 1437° / 16°

0.05

37 °

Chester, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high37°

Average low16°

Average precipitation0.05 in

Chance of precipitation27%

Record high55° (1999)

Record low-15° (1961)

Sun, 1537° / 13°

0.04

37 °

Chester, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high37°

Average low13°

Average precipitation0.04 in

Chance of precipitation17%

Record high56° (2016)

Record low-12° (1970)

Mon, 1638° / 13°

0.04

38 °

Chester, Monday, 16 November

Climate normal for this date — 60-year average.

Average high38°

Average low13°

Average precipitation0.04 in

Chance of precipitation10%

Record high54° (1999)

Record low-21° (1997)

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 Chester, 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 Chester, 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.