As of 02:03 MDT

Weather in Longmont, CO

54°

Longmont, Saturday, 24 October, 02:03

Clear. Feels like 51°. High 59°, low 53°.

Pressure29.97 inHg

Wind2 mph SW

Humidity53%

Visibility6.2 mi

Dew point37°

See detailed hourly forecast

Monthly outlook for Longmont, CO: average high 66.7°, average low 42.8°. That is 6.5° above the climate normal for October. Precipitation is expected on 2 days (about 0.3 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 5 November (73.7°), the coolest 2 November (35.3°).

66.7°/42.8°

Average high / low

+6.5°

Above normal

2 / 3

Wet days / normal

0.3 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
24 October – 2 November	63.8°	55.9°	+4.4°
3 November – 12 November	71.7°	52.2°	+10.8°
13 November – 22 November	at normal	48.7°	—

October records over 66 years

84.6°2 October 2024All-time high

-1.5°27 October 2020All-time low

Sun, 2561° / 47°

0.14

61 °

Longmont, Sunday, 25 October

Rain. High 61°, low 47°.

Pressure30.18 inHg

Wind3.8 mph E

Humidity58%

Visibility6.2 mi

Dew point38°

Mon, 2657° / 45°

0.14

57 °

Longmont, Monday, 26 October

Rain. High 57°, low 45°.

Pressure30.15 inHg

Wind2.5 mph SE

Humidity64%

Visibility6.2 mi

Dew point40°

Tue, 2765° / 37°

65 °

Longmont, Tuesday, 27 October

Overcast. High 65°, low 37°.

Pressure29.94 inHg

Wind1.9 mph E

Humidity42%

Visibility6.2 mi

Dew point35°

Wed, 2866° / 37°

66 °

Longmont, Wednesday, 28 October

Overcast. High 66°, low 37°.

Pressure29.94 inHg

Wind3 mph NW

Humidity34%

Visibility—

Dew point28°

Thu, 2968° / 37°

68 °

Longmont, Thursday, 29 October

Overcast. High 68°, low 37°.

Pressure29.91 inHg

Wind9.7 mph E

Humidity28%

Visibility—

Dew point26°

Fri, 3067° / 45°

67 °

Longmont, Friday, 30 October

Overcast. High 67°, low 45°.

Pressure29.88 inHg

Wind7.9 mph SE

Humidity29%

Visibility—

Dew point27°

Sat, 3167° / 49°

0.01

67 °

Longmont, Saturday, 31 October

Light rain. High 67°, low 49°.

Pressure29.83 inHg

Wind9.2 mph W

Humidity24%

Visibility—

Dew point25°

Sun, 0163° / 41°

0.01

63 °

Longmont, Sunday, 1 November

Light rain. High 63°, low 41°.

Pressure30.18 inHg

Wind7.6 mph SW

Humidity29%

Visibility—

Dew point25°

Mon, 0265° / 35°

65 °

Longmont, Monday, 2 November

Clear. High 65°, low 35°.

Pressure30.27 inHg

Wind6.5 mph E

Humidity13%

Visibility—

Dew point6°

Tue, 0371° / 38°

71 °

Longmont, Tuesday, 3 November

Clear. High 71°, low 38°.

Pressure30.03 inHg

Wind7.2 mph W

Humidity11%

Visibility—

Dew point6°

Wed, 0473° / 40°

73 °

Longmont, Wednesday, 4 November

Clear. High 73°, low 40°.

Pressure29.91 inHg

Wind5.6 mph SE

Humidity6%

Visibility—

Dew point-5°

Thu, 0574° / 46°

74 °

Longmont, Thursday, 5 November

Partly cloudy. High 74°, low 46°.

Pressure29.83 inHg

Wind8.3 mph SE

Humidity10%

Visibility—

Dew point8°

Fri, 0669° / 45°

69 °

Longmont, Friday, 6 November

Mostly clear. High 69°, low 45°.

Pressure30.15 inHg

Wind6.1 mph W

Humidity16%

Visibility—

Dew point16°

Sat, 0772° / 44°

72 °

Longmont, Saturday, 7 November

Overcast. High 72°, low 44°.

Pressure30.30 inHg

Wind5.7 mph SE

Humidity17%

Visibility—

Dew point19°

Sun, 0871° / 46°

71 °

Longmont, Sunday, 8 November

Clear. High 71°, low 46°.

Pressure30.06 inHg

Wind3.9 mph SE

Humidity13%

Visibility—

Dew point15°

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

Mon, 0951° / 29°

0.06

51 °

Longmont, Monday, 9 November

Climate normal for this date — 60-year average.

Average high51°

Average low29°

Average precipitation0.06 in

Chance of precipitation23%

Record high69° (2016)

Record low13° (1986)

Tue, 1051° / 27°

0.03

51 °

Longmont, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high51°

Average low27°

Average precipitation0.03 in

Chance of precipitation20%

Record high69° (2005)

Record low8° (1986)

Wed, 1149° / 27°

0.04

49 °

Longmont, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high49°

Average low27°

Average precipitation0.04 in

Chance of precipitation20%

Record high72° (2025)

Record low6° (1998)

Thu, 1250° / 26°

0.04

50 °

Longmont, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high50°

Average low26°

Average precipitation0.04 in

Chance of precipitation23%

Record high70° (1989)

Record low1° (2014)

Fri, 1351° / 28°

0.04

51 °

Longmont, Friday, 13 November

Climate normal for this date — 60-year average.

Average high51°

Average low28°

Average precipitation0.04 in

Chance of precipitation18%

Record high71° (2025)

Record low-12° (2014)

Sat, 1449° / 27°

0.06

49 °

Longmont, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high49°

Average low27°

Average precipitation0.06 in

Chance of precipitation27%

Record high73° (2025)

Record low2° (2000)

Sun, 1549° / 26°

0.04

49 °

Longmont, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high49°

Average low26°

Average precipitation0.04 in

Chance of precipitation15%

Record high73° (2016)

Record low-8° (1997)

Mon, 1651° / 26°

0.02

51 °

Longmont, Monday, 16 November

Climate normal for this date — 60-year average.

Average high51°

Average low26°

Average precipitation0.02 in

Chance of precipitation10%

Record high76° (2016)

Record low-5° (2014)

Tue, 1749° / 26°

0.04

49 °

Longmont, Tuesday, 17 November

Climate normal for this date — 60-year average.

Average high49°

Average low26°

Average precipitation0.04 in

Chance of precipitation18%

Record high70° (1999)

Record low2° (1980)

Wed, 1848° / 26°

0.02

48 °

Longmont, Wednesday, 18 November

Climate normal for this date — 60-year average.

Average high48°

Average low26°

Average precipitation0.02 in

Chance of precipitation8%

Record high71° (2008)

Record low4° (1969)

Thu, 1948° / 26°

0.04

48 °

Longmont, Thursday, 19 November

Climate normal for this date — 60-year average.

Average high48°

Average low26°

Average precipitation0.04 in

Chance of precipitation18%

Record high73° (2007)

Record low0° (2022)

Fri, 2048° / 25°

0.06

48 °

Longmont, Friday, 20 November

Climate normal for this date — 60-year average.

Average high48°

Average low25°

Average precipitation0.06 in

Chance of precipitation15%

Record high65° (2003)

Record low2° (2000)

Sat, 2147° / 24°

0.04

47 °

Longmont, Saturday, 21 November

Climate normal for this date — 60-year average.

Average high47°

Average low24°

Average precipitation0.04 in

Chance of precipitation22%

Record high65° (2012)

Record low5° (1964)

Sun, 2247° / 24°

0.03

47 °

Longmont, Sunday, 22 November

Climate normal for this date — 60-year average.

Average high47°

Average low24°

Average precipitation0.03 in

Chance of precipitation18%

Record high66° (2002)

Record low3° (1975)

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 Longmont, 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 Longmont, 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.