As of 02:13 MDT

Weather in Merna, WY

30°Current weather

Merna, Thursday, 15 October, 02:13

Mostly clear. Feels like 23°. High 51°, low 25°.

Pressure30.30 inHg
Wind7.3 mph NW
Humidity88%
Visibility6.2 mi
Dew point27°

Monthly outlook for Merna, WY: average high 45.6°, average low 28.7°. That is 0.5° below the climate normal for October. Precipitation is expected on 4 days (about 0.5 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 17 October (60°), the coolest 25 October (18.5°).

45.6°/28.7°
Average high / low
−0.5°
Below normal
4 / 4
Wet days / normal
0.5 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
15 October – 24 October48.4°48.2°+0.1°
25 October – 3 November41°42°-0.6°
4 November – 13 Novemberat normal37.2°—

October records over 66 years

73.2°1 October 2010All-time high
-13.5°30 October 2019All-time low

Climate normals and records are computed from the nearest reference point — Halfway (10 mi).

Fri, 1653° / 23°0Clear
53 °Clear

Merna, Friday, 16 October

Clear. High 53°, low 23°.

Pressure30.65 inHg
Wind3.3 mph SE
Humidity61%
Visibility6.2 mi
Dew point28°
Sat, 1760° / 34°0Partly cloudy
60 °Partly cloudy

Merna, Saturday, 17 October

Partly cloudy. High 60°, low 34°.

Pressure30.30 inHg
Wind1.1 mph E
Humidity39%
Visibility6.2 mi
Dew point23°
Sun, 1858° / 36°0Clear
58 °Clear

Merna, Sunday, 18 October

Clear. High 58°, low 36°.

Pressure30.12 inHg
Wind3 mph SE
Humidity38%
Visibility6.2 mi
Dew point19°
Mon, 1955° / 35°0Clear
55 °Clear

Merna, Monday, 19 October

Clear. High 55°, low 35°.

Pressure30.06 inHg
Wind6.7 mph SE
Humidity43%
Visibility—
Dew point28°
Tue, 2051° / 36°0.1Light rain
51 °Light rain

Merna, Tuesday, 20 October

Light rain. High 51°, low 36°.

Pressure29.97 inHg
Wind8.1 mph S
Humidity52%
Visibility—
Dew point31°
Wed, 2154° / 36°0.08Light rain
54 °Light rain

Merna, Wednesday, 21 October

Light rain. High 54°, low 36°.

Pressure29.77 inHg
Wind11.1 mph S
Humidity54%
Visibility—
Dew point32°
Thu, 2240° / 33°0.18Snow
40 °Snow

Merna, Thursday, 22 October

Snow. High 40°, low 33°.

Pressure29.74 inHg
Wind14.4 mph W
Humidity96%
Visibility—
Dew point36°
Fri, 2330° / 22°0.02Light snow
30 °Light snow

Merna, Friday, 23 October

Light snow. High 30°, low 22°.

Pressure30.12 inHg
Wind18.3 mph NW
Humidity57%
Visibility—
Dew point15°
Sat, 2431° / 20°0.08Light snow
31 °Light snow

Merna, Saturday, 24 October

Light snow. High 31°, low 20°.

Pressure30.45 inHg
Wind12.1 mph W
Humidity53%
Visibility—
Dew point13°
Sun, 2535° / 19°0Partly cloudy
35 °Partly cloudy

Merna, Sunday, 25 October

Partly cloudy. High 35°, low 19°.

Pressure30.53 inHg
Wind12.5 mph NW
Humidity41%
Visibility—
Dew point10°
Mon, 2638° / 24°0Overcast
38 °Overcast

Merna, Monday, 26 October

Overcast. High 38°, low 24°.

Pressure30.24 inHg
Wind12.2 mph NW
Humidity40%
Visibility—
Dew point12°
Tue, 2744° / 26°0Mostly clear
44 °Mostly clear

Merna, Tuesday, 27 October

Mostly clear. High 44°, low 26°.

Pressure30.09 inHg
Wind10.4 mph W
Humidity53%
Visibility—
Dew point23°
Wed, 2843° / 29°0Overcast
43 °Overcast

Merna, Wednesday, 28 October

Overcast. High 43°, low 29°.

Pressure29.91 inHg
Wind13.2 mph NW
Humidity59%
Visibility—
Dew point27°
Thu, 2948° / 28°0Overcast
48 °Overcast

Merna, Thursday, 29 October

Overcast. High 48°, low 28°.

Pressure29.94 inHg
Wind7.1 mph SW
Humidity46%
Visibility—
Dew point21°
Fri, 3037° / 34°0Partly cloudy
37 °Partly cloudy

Merna, Friday, 30 October

Partly cloudy. High 37°, low 34°.

Pressure29.77 inHg
Wind31.5 mph W
Humidity51%
Visibility—
Dew point20°
From day 17 onward the outlook is built from 60-year climate statistics
Sat, 3140° / 21°0.04Climate normal
40 °Climate normal

Merna, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high40°
Average low21°
Average precipitation0.04 in
Chance of precipitation30%
Record high57° (1988)
Record low-10° (1972)
Sun, 0140° / 20°0.04Climate normal
40 °Climate normal

Merna, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high40°
Average low20°
Average precipitation0.04 in
Chance of precipitation25%
Record high57° (1988)
Record low-13° (2002)
Mon, 0239° / 19°0.06Climate normal
39 °Climate normal

Merna, Monday, 2 November

Climate normal for this date — 60-year average.

Average high39°
Average low19°
Average precipitation0.06 in
Chance of precipitation25%
Record high56° (1962)
Record low-15° (1973)
Tue, 0340° / 18°0.03Climate normal
40 °Climate normal

Merna, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high40°
Average low18°
Average precipitation0.03 in
Chance of precipitation15%
Record high58° (1962)
Record low-14° (1967)
Wed, 0440° / 18°0.03Climate normal
40 °Climate normal

Merna, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high40°
Average low18°
Average precipitation0.03 in
Chance of precipitation17%
Record high55° (2020)
Record low-11° (2002)
Thu, 0539° / 19°0.04Climate normal
39 °Climate normal

Merna, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high39°
Average low19°
Average precipitation0.04 in
Chance of precipitation22%
Record high55° (1980)
Record low-14° (1961)
Fri, 0639° / 19°0.04Climate normal
39 °Climate normal

Merna, Friday, 6 November

Climate normal for this date — 60-year average.

Average high39°
Average low19°
Average precipitation0.04 in
Chance of precipitation27%
Record high54° (1999)
Record low-14° (2003)
Sat, 0739° / 18°0.06Climate normal
39 °Climate normal

Merna, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high39°
Average low18°
Average precipitation0.06 in
Chance of precipitation30%
Record high54° (1999)
Record low-20° (2003)
Sun, 0837° / 18°0.07Climate normal
37 °Climate normal

Merna, Sunday, 8 November

Climate normal for this date — 60-year average.

Average high37°
Average low18°
Average precipitation0.07 in
Chance of precipitation40%
Record high54° (1999)
Record low-3° (2003)
Mon, 0937° / 17°0.05Climate normal
37 °Climate normal

Merna, Monday, 9 November

Climate normal for this date — 60-year average.

Average high37°
Average low17°
Average precipitation0.05 in
Chance of precipitation32%
Record high56° (2016)
Record low-9° (1960)
Tue, 1036° / 15°0.04Climate normal
36 °Climate normal

Merna, Tuesday, 10 November

Climate normal for this date — 60-year average.

Average high36°
Average low15°
Average precipitation0.04 in
Chance of precipitation33%
Record high53° (2016)
Record low-12° (1985)
Wed, 1135° / 15°0.04Climate normal
35 °Climate normal

Merna, Wednesday, 11 November

Climate normal for this date — 60-year average.

Average high35°
Average low15°
Average precipitation0.04 in
Chance of precipitation30%
Record high52° (1999)
Record low-13° (2000)
Thu, 1236° / 15°0.06Climate normal
36 °Climate normal

Merna, Thursday, 12 November

Climate normal for this date — 60-year average.

Average high36°
Average low15°
Average precipitation0.06 in
Chance of precipitation18%
Record high56° (1999)
Record low-14° (2000)
Fri, 1335° / 16°0.05Climate normal
35 °Climate normal

Merna, Friday, 13 November

Climate normal for this date — 60-year average.

Average high35°
Average low16°
Average precipitation0.05 in
Chance of precipitation32%
Record high56° (1999)
Record low-13° (2000)

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 Merna, 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 Merna, 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.