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As of 19:34 MDT

Weather in Lyman, WY

41°Current weather

Lyman, Monday, 12 October, 19:34

Overcast. Feels like 36°. High 46°, low 41°.

Pressure29.80 inHg
Wind9.2 mph SE
Humidity94%
Visibility6.2 mi
Dew point40°

Monthly outlook for Lyman, WY: average high 51.3°, average low 34.2°. That is 1° below the climate normal for October. Precipitation is expected on 4 days (about 1.5 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 19 October (65.5°), the coolest 17 October (26.8°).

51.3°/34.2°
Average high / low
−1°
Below normal
4 / 4
Wet days / normal
1.5 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
12 October – 21 October52.5°54.4°-1.1°
22 October – 31 October49.4°49°+0.2°
1 November – 10 Novemberat normal43.7°—

October records over 66 years

82.2°4 October 2024All-time high
-11.4°30 October 2019All-time low
Tue, 1344° / 35°0.56Rain
44 °Rain

Lyman, Tuesday, 13 October

Rain. High 44°, low 35°.

Pressure29.91 inHg
Wind1.2 mph W
Humidity70%
Visibility6.2 mi
Dew point37°
Wed, 1448° / 36°0.01Light rain
48 °Light rain

Lyman, Wednesday, 14 October

Light rain. High 48°, low 36°.

Pressure30.12 inHg
Wind4.8 mph N
Humidity65%
Visibility6.2 mi
Dew point35°
Thu, 1551° / 32°0Overcast
51 °Overcast

Lyman, Thursday, 15 October

Overcast. High 51°, low 32°.

Pressure30.53 inHg
Wind12.4 mph E
Humidity53%
Visibility6.2 mi
Dew point33°
Fri, 1651° / 28°0Clear
51 °Clear

Lyman, Friday, 16 October

Clear. High 51°, low 28°.

Pressure30.65 inHg
Wind5.5 mph NE
Humidity62%
Visibility6.2 mi
Dew point31°
Sat, 1756° / 27°0Overcast
56 °Overcast

Lyman, Saturday, 17 October

Overcast. High 56°, low 27°.

Pressure30.27 inHg
Wind7.7 mph SW
Humidity48%
Visibility—
Dew point28°
Sun, 1861° / 37°0Clear
61 °Clear

Lyman, Sunday, 18 October

Clear. High 61°, low 37°.

Pressure30.03 inHg
Wind9.9 mph W
Humidity36%
Visibility—
Dew point28°
Mon, 1966° / 42°0Clear
66 °Clear

Lyman, Monday, 19 October

Clear. High 66°, low 42°.

Pressure29.85 inHg
Wind18 mph S
Humidity24%
Visibility—
Dew point20°
Tue, 2058° / 41°0.13Light rain
58 °Light rain

Lyman, Tuesday, 20 October

Light rain. High 58°, low 41°.

Pressure29.59 inHg
Wind13.5 mph S
Humidity27%
Visibility—
Dew point22°
Wed, 2145° / 33°0.53Snow
45 °Snow

Lyman, Wednesday, 21 October

Snow. High 45°, low 33°.

Pressure29.50 inHg
Wind23.9 mph W
Humidity58%
Visibility—
Dew point30°
Thu, 2240° / 31°0Partly cloudy
40 °Partly cloudy

Lyman, Thursday, 22 October

Partly cloudy. High 40°, low 31°.

Pressure30.03 inHg
Wind26.1 mph W
Humidity54%
Visibility—
Dew point22°
Fri, 2341° / 32°0.01Snow
41 °Snow

Lyman, Friday, 23 October

Snow. High 41°, low 32°.

Pressure30.24 inHg
Wind20.3 mph W
Humidity49%
Visibility—
Dew point22°
Sat, 2445° / 28°0Clear
45 °Clear

Lyman, Saturday, 24 October

Clear. High 45°, low 28°.

Pressure30.53 inHg
Wind13 mph W
Humidity40%
Visibility—
Dew point16°
Sun, 2554° / 31°0Mostly clear
54 °Mostly clear

Lyman, Sunday, 25 October

Mostly clear. High 54°, low 31°.

Pressure30.39 inHg
Wind15.8 mph NW
Humidity24%
Visibility—
Dew point12°
Mon, 2656° / 34°0Mostly clear
56 °Mostly clear

Lyman, Monday, 26 October

Mostly clear. High 56°, low 34°.

Pressure30.47 inHg
Wind7 mph NE
Humidity43%
Visibility—
Dew point26°
Tue, 2760° / 40°0Clear
60 °Clear

Lyman, Tuesday, 27 October

Clear. High 60°, low 40°.

Pressure30.33 inHg
Wind5.3 mph NE
Humidity39%
Visibility—
Dew point28°
From day 17 onward the outlook is built from 60-year climate statistics
Wed, 2849° / 29°0.06Climate normal
49 °Climate normal

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°0.08Climate normal
47 °Climate normal

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°0.06Climate normal
45 °Climate normal

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°0.04Climate normal
44 °Climate normal

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°0.04Climate normal
45 °Climate normal

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°0.06Climate normal
44 °Climate normal

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°0.04Climate normal
44 °Climate normal

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°0.02Climate normal
45 °Climate normal

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°0.03Climate normal
45 °Climate normal

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°0.03Climate normal
44 °Climate normal

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°0.02Climate normal
44 °Climate normal

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°0.06Climate normal
43 °Climate normal

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)
Mon, 0942° / 24°0.07Climate normal
42 °Climate normal

Lyman, Monday, 9 November

Climate normal for this date — 60-year average.

Average high42°
Average low24°
Average precipitation0.07 in
Chance of precipitation27%
Record high59° (2016)
Record low3° (2011)
Tue, 1040° / 23°0.06Climate normal
40 °Climate normal

Lyman, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high40°
Average low23°
Average precipitation0.06 in
Chance of precipitation27%
Record high58° (2025)
Record low2° (1992)

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.