As of 01:13 MDT

Weather in Johnson, CO

59°

Johnson, Wednesday, 7 October, 01:13

Clear. Feels like 57°. High 83°, low 58°.

Pressure30.00 inHg

Wind7 mph W

Humidity42%

Visibility6.2 mi

Dew point36°

See detailed hourly forecast

Monthly outlook for Johnson, CO: average high 71.8°, average low 48.9°. That is 3.3° above the climate normal for October. Precipitation is expected on 1 day (about 0.2 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 9 October (86°), the coolest 17 October (35.4°).

71.8°/48.9°

Average high / low

+3.3°

Above normal

1 / 3

Wet days / normal

0.2 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
7 October – 16 October	73.8°	66.9°	+3.9°
17 October – 26 October	68.5°	63.5°	+2.8°
27 October – 5 November	at normal	56.2°	—

October records over 66 years

86.9°2 October 2024All-time high

-6.3°27 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Keenesburg (4 mi).

Thu, 0885° / 55°

85 °

Johnson, Thursday, 8 October

Clear. High 85°, low 55°.

Pressure29.94 inHg

Wind2.9 mph N

Humidity17%

Visibility6.2 mi

Dew point33°

Fri, 0986° / 55°

86 °

Johnson, Friday, 9 October

Clear. High 86°, low 55°.

Pressure29.80 inHg

Wind0.7 mph NW

Humidity16%

Visibility6.2 mi

Dew point33°

Sat, 1085° / 56°

85 °

Johnson, Saturday, 10 October

Clear. High 85°, low 56°.

Pressure29.62 inHg

Wind5 mph SW

Humidity15%

Visibility6.2 mi

Dew point26°

Sun, 1178° / 56°

78 °

Johnson, Sunday, 11 October

Partly cloudy. High 78°, low 56°.

Pressure29.71 inHg

Wind13.9 mph E

Humidity27%

Visibility—

Dew point35°

Mon, 1275° / 51°

75 °

Johnson, Monday, 12 October

Mostly clear. High 75°, low 51°.

Pressure29.85 inHg

Wind21.3 mph N

Humidity55%

Visibility—

Dew point44°

Tue, 1368° / 54°

68 °

Johnson, Tuesday, 13 October

Overcast. High 68°, low 54°.

Pressure29.83 inHg

Wind8 mph E

Humidity59%

Visibility—

Dew point49°

Wed, 1469° / 52°

0.19

69 °

Johnson, Wednesday, 14 October

Light rain. High 69°, low 52°.

Pressure29.53 inHg

Wind24.9 mph NW

Humidity42%

Visibility—

Dew point43°

Thu, 1553° / 42°

0.01

53 °

Johnson, Thursday, 15 October

Light rain. High 53°, low 42°.

Pressure30.30 inHg

Wind19.6 mph N

Humidity49%

Visibility—

Dew point29°

Fri, 1656° / 37°

56 °

Johnson, Friday, 16 October

Clear. High 56°, low 37°.

Pressure30.33 inHg

Wind8.8 mph NE

Humidity32%

Visibility—

Dew point20°

Sat, 1763° / 35°

63 °

Johnson, Saturday, 17 October

Clear. High 63°, low 35°.

Pressure30.30 inHg

Wind7.8 mph S

Humidity21%

Visibility—

Dew point14°

Sun, 1874° / 47°

74 °

Johnson, Sunday, 18 October

Clear. High 74°, low 47°.

Pressure29.97 inHg

Wind11.2 mph SE

Humidity15%

Visibility—

Dew point17°

Mon, 1974° / 48°

74 °

Johnson, Monday, 19 October

Clear. High 74°, low 48°.

Pressure29.88 inHg

Wind8.9 mph S

Humidity14%

Visibility—

Dew point16°

Tue, 2066° / 46°

66 °

Johnson, Tuesday, 20 October

Clear. High 66°, low 46°.

Pressure30.15 inHg

Wind8.9 mph SE

Humidity27%

Visibility—

Dew point26°

Wed, 2173° / 49°

73 °

Johnson, Wednesday, 21 October

Clear. High 73°, low 49°.

Pressure30.15 inHg

Wind7.9 mph S

Humidity15%

Visibility—

Dew point17°

Thu, 2261° / 43°

61 °

Johnson, Thursday, 22 October

Mostly clear. High 61°, low 43°.

Pressure30.36 inHg

Wind9.6 mph SE

Humidity31%

Visibility—

Dew point28°

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

Fri, 2363° / 38°

0.02

63 °

Johnson, Friday, 23 October

Climate normal for this date — 60-year average.

Average high63°

Average low38°

Average precipitation0.02 in

Chance of precipitation13%

Record high83° (2003)

Record low21° (2020)

Sat, 2462° / 37°

0.03

62 °

Johnson, Saturday, 24 October

Climate normal for this date — 60-year average.

Average high62°

Average low37°

Average precipitation0.03 in

Chance of precipitation13%

Record high80° (2014)

Record low22° (2002)

Sun, 2563° / 36°

0.05

63 °

Johnson, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high63°

Average low36°

Average precipitation0.05 in

Chance of precipitation12%

Record high81° (2017)

Record low12° (2020)

Mon, 2661° / 36°

0.06

61 °

Johnson, Monday, 26 October

Climate normal for this date — 60-year average.

Average high61°

Average low36°

Average precipitation0.06 in

Chance of precipitation15%

Record high77° (1979)

Record low2° (2020)

Tue, 2759° / 35°

0.03

59 °

Johnson, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high59°

Average low35°

Average precipitation0.03 in

Chance of precipitation20%

Record high81° (2016)

Record low-6° (2020)

Wed, 2860° / 34°

0.05

60 °

Johnson, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high60°

Average low34°

Average precipitation0.05 in

Chance of precipitation13%

Record high82° (2016)

Record low12° (2020)

Thu, 2959° / 34°

0.06

59 °

Johnson, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high59°

Average low34°

Average precipitation0.06 in

Chance of precipitation25%

Record high81° (2003)

Record low5° (1991)

Fri, 3056° / 32°

0.04

56 °

Johnson, Friday, 30 October

Climate normal for this date — 60-year average.

Average high56°

Average low32°

Average precipitation0.04 in

Chance of precipitation23%

Record high79° (1968)

Record low4° (2019)

Sat, 3155° / 32°

0.03

55 °

Johnson, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high55°

Average low32°

Average precipitation0.03 in

Chance of precipitation22%

Record high78° (2016)

Record low-3° (2019)

Sun, 0154° / 32°

0.06

54 °

Johnson, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high54°

Average low32°

Average precipitation0.06 in

Chance of precipitation22%

Record high75° (1988)

Record low12° (2002)

Mon, 0254° / 30°

0.04

54 °

Johnson, Monday, 2 November

Climate normal for this date — 60-year average.

Average high54°

Average low30°

Average precipitation0.04 in

Chance of precipitation13%

Record high81° (2025)

Record low4° (1991)

Tue, 0354° / 30°

0.03

54 °

Johnson, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high54°

Average low30°

Average precipitation0.03 in

Chance of precipitation17%

Record high74° (2015)

Record low1° (1991)

Wed, 0456° / 30°

0.01

56 °

Johnson, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high56°

Average low30°

Average precipitation0.01 in

Chance of precipitation7%

Record high75° (2025)

Record low8° (2002)

Thu, 0556° / 31°

0.02

56 °

Johnson, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high56°

Average low31°

Average precipitation0.02 in

Chance of precipitation12%

Record high75° (2023)

Record low8° (2002)

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 Johnson, 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 Johnson, 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.