As of 11:33 MDT

Weather in Lyman, WY

68°

Lyman, Saturday, 10 October, 11:33

Partly cloudy. Feels like 67°. High 68°, low 55°.

Pressure29.62 inHg

Wind20.7 mph SW

Humidity34%

Visibility6.2 mi

Dew point39°

See detailed hourly forecast

Monthly outlook for Lyman, WY: average high 57.3°, average low 41.8°. That is 1.8° above the climate normal for October. Precipitation is expected on 7 days (about 1.9 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 10 October (68.5°), the coolest 21 October (33°).

57.3°/41.8°

Average high / low

+1.8°

Above normal

7 / 4

Wet days / normal

1.9 in

Precipitation this month

Ten-day blocks vs climate normal

Period	Forecast high	Normal	Difference
10 October – 19 October	55.5°	55.3°	+0.1°
20 October – 29 October	60.4°	50.7°	+5.4°
30 October – 8 November	at normal	44.4°	—

October records over 66 years

82.2°4 October 2024All-time high

-11.4°30 October 2019All-time low

Sun, 1158° / 49°

0.25

58 °

Lyman, Sunday, 11 October

Rain. High 58°, low 49°.

Pressure29.59 inHg

Wind4.4 mph N

Humidity83%

Visibility6.2 mi

Dew point49°

Mon, 1255° / 44°

0.44

55 °

Lyman, Monday, 12 October

Rain. High 55°, low 44°.

Pressure29.80 inHg

Wind6.6 mph E

Humidity63%

Visibility6.0 mi

Dew point43°

Tue, 1354° / 40°

0.18

54 °

Lyman, Tuesday, 13 October

Rain. High 54°, low 40°.

Pressure29.85 inHg

Wind8.5 mph E

Humidity62%

Visibility6.2 mi

Dew point40°

Wed, 1440° / 33°

0.49

40 °

Lyman, Wednesday, 14 October

Rain. High 40°, low 33°.

Pressure30.06 inHg

Wind9 mph W

Humidity88%

Visibility—

Dew point36°

Thu, 1546° / 37°

0.38

46 °

Lyman, Thursday, 15 October

Rain. High 46°, low 37°.

Pressure30.33 inHg

Wind11 mph W

Humidity86%

Visibility—

Dew point36°

Fri, 1651° / 35°

51 °

Lyman, Friday, 16 October

Clear. High 51°, low 35°.

Pressure30.47 inHg

Wind8.5 mph E

Humidity59%

Visibility—

Dew point31°

Sat, 1757° / 34°

57 °

Lyman, Saturday, 17 October

Partly cloudy. High 57°, low 34°.

Pressure30.30 inHg

Wind7.8 mph SW

Humidity44%

Visibility—

Dew point25°

Sun, 1862° / 44°

62 °

Lyman, Sunday, 18 October

Overcast. High 62°, low 44°.

Pressure30.09 inHg

Wind18.1 mph W

Humidity38%

Visibility—

Dew point32°

Mon, 1964° / 45°

0.12

64 °

Lyman, Monday, 19 October

Light rain. High 64°, low 45°.

Pressure29.91 inHg

Wind20.7 mph SW

Humidity31%

Visibility—

Dew point30°

Tue, 2048° / 38°

48 °

Lyman, Tuesday, 20 October

Clear. High 48°, low 38°.

Pressure30.09 inHg

Wind23.5 mph W

Humidity36%

Visibility—

Dew point19°

Wed, 2159° / 33°

59 °

Lyman, Wednesday, 21 October

Clear. High 59°, low 33°.

Pressure30.12 inHg

Wind16 mph W

Humidity23%

Visibility—

Dew point13°

Thu, 2261° / 40°

61 °

Lyman, Thursday, 22 October

Overcast. High 61°, low 40°.

Pressure30.09 inHg

Wind6.1 mph SW

Humidity28%

Visibility—

Dew point21°

Fri, 2367° / 46°

67 °

Lyman, Friday, 23 October

Partly cloudy. High 67°, low 46°.

Pressure29.97 inHg

Wind18.4 mph W

Humidity27%

Visibility—

Dew point27°

Sat, 2465° / 49°

65 °

Lyman, Saturday, 24 October

Overcast. High 65°, low 49°.

Pressure30.09 inHg

Wind10.9 mph NW

Humidity37%

Visibility—

Dew point34°

Sun, 2562° / 46°

62 °

Lyman, Sunday, 25 October

Clear. High 62°, low 46°.

Pressure30.24 inHg

Wind7.2 mph SW

Humidity38%

Visibility—

Dew point31°

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

Mon, 2650° / 30°

0.04

50 °

Lyman, Monday, 26 October

Climate normal for this date — 60-year average.

Average high50°

Average low30°

Average precipitation0.04 in

Chance of precipitation22%

Record high66° (1977)

Record low-6° (2020)

Tue, 2749° / 29°

0.04

49 °

Lyman, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high49°

Average low29°

Average precipitation0.04 in

Chance of precipitation18%

Record high68° (2024)

Record low9° (1996)

Wed, 2849° / 29°

0.06

49 °

Lyman, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high49°

Average low29°

Average precipitation0.06 in

Chance of precipitation27%

Record high66° (2018)

Record low2° (1996)

Thu, 2947° / 28°

0.08

47 °

Lyman, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high47°

Average low28°

Average precipitation0.08 in

Chance of precipitation33%

Record high65° (1964)

Record low0° (2019)

Fri, 3045° / 27°

0.06

45 °

Lyman, Friday, 30 October

Climate normal for this date — 60-year average.

Average high45°

Average low27°

Average precipitation0.06 in

Chance of precipitation30%

Record high63° (2001)

Record low-11° (2019)

Sat, 3144° / 27°

0.04

44 °

Lyman, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high44°

Average low27°

Average precipitation0.04 in

Chance of precipitation33%

Record high64° (2014)

Record low-3° (1991)

Sun, 0145° / 27°

0.04

45 °

Lyman, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high45°

Average low27°

Average precipitation0.04 in

Chance of precipitation25%

Record high62° (1988)

Record low-1° (1972)

Mon, 0244° / 25°

0.06

44 °

Lyman, Monday, 2 November

Climate normal for this date — 60-year average.

Average high44°

Average low25°

Average precipitation0.06 in

Chance of precipitation27%

Record high64° (2025)

Record low0° (1991)

Tue, 0344° / 25°

0.04

44 °

Lyman, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high44°

Average low25°

Average precipitation0.04 in

Chance of precipitation15%

Record high64° (2020)

Record low-4° (1991)

Wed, 0445° / 25°

0.02

45 °

Lyman, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high45°

Average low25°

Average precipitation0.02 in

Chance of precipitation10%

Record high64° (2020)

Record low-5° (1973)

Thu, 0545° / 26°

0.03

45 °

Lyman, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high45°

Average low26°

Average precipitation0.03 in

Chance of precipitation13%

Record high64° (2020)

Record low-1° (1961)

Fri, 0644° / 26°

0.03

44 °

Lyman, Friday, 6 November

Climate normal for this date — 60-year average.

Average high44°

Average low26°

Average precipitation0.03 in

Chance of precipitation20%

Record high65° (2020)

Record low-4° (1961)

Sat, 0744° / 25°

0.02

44 °

Lyman, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high44°

Average low25°

Average precipitation0.02 in

Chance of precipitation12%

Record high63° (1999)

Record low-7° (1990)

Sun, 0843° / 26°

0.06

43 °

Lyman, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high43°

Average low26°

Average precipitation0.06 in

Chance of precipitation30%

Record high61° (1978)

Record low4° (2015)

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 Lyman, WY 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 Lyman, WY 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.