As of 05:31 MDT

Weather in Lyman, WY

41°Current weather

Lyman, Monday, 12 October, 05:31

Partly cloudy. Feels like 38°. High 52°, low 41°.

Pressure29.80 inHg
Wind5.7 mph E
Humidity94%
Visibility6.2 mi
Dew point40°

Monthly outlook for Lyman, WY: average high 55.9°, average low 39.3°. That is 1.6° above the climate normal for October. Precipitation is expected on 4 days (about 0.7 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 19 October (64.6°), the coolest 16 October (31.4°).

55.9°/39.3°
Average high / low
+1.6°
Above normal
4 / 4
Wet days / normal
0.7 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
12 October – 21 October55°54.4°+0.3°
22 October – 31 October57.4°49°+4.7°
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, 1345° / 35°0.07Light rain
45 °Light rain

Lyman, Tuesday, 13 October

Light rain. High 45°, low 35°.

Pressure29.94 inHg
Wind7.7 mph N
Humidity81%
Visibility6.2 mi
Dew point39°
Wed, 1447° / 35°0.19Rain
47 °Rain

Lyman, Wednesday, 14 October

Rain. High 47°, low 35°.

Pressure30.06 inHg
Wind7.6 mph NE
Humidity84%
Visibility5.8 mi
Dew point40°
Thu, 1550° / 39°0.16Rain
50 °Rain

Lyman, Thursday, 15 October

Rain. High 50°, low 39°.

Pressure30.45 inHg
Wind13.7 mph SE
Humidity62%
Visibility6.2 mi
Dew point35°
Fri, 1650° / 31°0Clear
50 °Clear

Lyman, Friday, 16 October

Clear. High 50°, low 31°.

Pressure30.56 inHg
Wind11.6 mph E
Humidity61%
Visibility—
Dew point29°
Sat, 1759° / 34°0Clear
59 °Clear

Lyman, Saturday, 17 October

Clear. High 59°, low 34°.

Pressure30.18 inHg
Wind10.8 mph S
Humidity56%
Visibility—
Dew point35°
Sun, 1862° / 42°0Overcast
62 °Overcast

Lyman, Sunday, 18 October

Overcast. High 62°, low 42°.

Pressure29.97 inHg
Wind12 mph W
Humidity24%
Visibility—
Dew point20°
Mon, 1965° / 43°0Clear
65 °Clear

Lyman, Monday, 19 October

Clear. High 65°, low 43°.

Pressure29.94 inHg
Wind14.1 mph S
Humidity24%
Visibility—
Dew point20°
Tue, 2063° / 45°0Partly cloudy
63 °Partly cloudy

Lyman, Tuesday, 20 October

Partly cloudy. High 63°, low 45°.

Pressure29.68 inHg
Wind16 mph SW
Humidity28%
Visibility—
Dew point26°
Wed, 2157° / 40°0Overcast
57 °Overcast

Lyman, Wednesday, 21 October

Overcast. High 57°, low 40°.

Pressure29.83 inHg
Wind11.1 mph NE
Humidity53%
Visibility—
Dew point34°
Thu, 2262° / 44°0Partly cloudy
62 °Partly cloudy

Lyman, Thursday, 22 October

Partly cloudy. High 62°, low 44°.

Pressure30.00 inHg
Wind9.2 mph NE
Humidity46%
Visibility—
Dew point34°
Fri, 2363° / 45°0.02Light rain
63 °Light rain

Lyman, Friday, 23 October

Light rain. High 63°, low 45°.

Pressure30.03 inHg
Wind16.7 mph SE
Humidity47%
Visibility—
Dew point35°
Sat, 2446° / 38°0.02Light rain
46 °Light rain

Lyman, Saturday, 24 October

Light rain. High 46°, low 38°.

Pressure30.12 inHg
Wind25.4 mph W
Humidity67%
Visibility—
Dew point32°
Sun, 2554° / 35°0Clear
54 °Clear

Lyman, Sunday, 25 October

Clear. High 54°, low 35°.

Pressure30.27 inHg
Wind5.9 mph NE
Humidity49%
Visibility—
Dew point28°
Mon, 2659° / 40°0Clear
59 °Clear

Lyman, Monday, 26 October

Clear. High 59°, low 40°.

Pressure30.15 inHg
Wind6.4 mph SW
Humidity37%
Visibility—
Dew point26°
Tue, 2762° / 42°0Overcast
62 °Overcast

Lyman, Tuesday, 27 October

Overcast. High 62°, low 42°.

Pressure29.97 inHg
Wind13 mph W
Humidity18%
Visibility—
Dew point12°
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.