As of 23:43 MDT

Weather in Merna, WY

33°Current weather

Merna, Sunday, 18 October, 23:43

Clear. Feels like 33°. High 58°, low 25°.

Pressure30.15 inHg
Wind0.5 mph W
Humidity71%
Visibility6.2 mi
Dew point25°

Monthly outlook for Merna, WY: average high 45.2°, average low 26.2°. That is 0.3° above the climate normal for October. Precipitation is expected on 5 days (about 1.0 inches), against a normal of 4 days and 0.7 inches. The warmest day looks like 19 October (59.2°), the coolest 31 October (15.2°).

45.2°/26.2°
Average high / low
+0.3°
Above normal
5 / 4
Wet days / normal
1.0 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
18 October – 27 October50.7°46.9°+2.1°
28 October – 6 November36.1°40.2°-2.3°
7 November – 16 Novemberat normal35.8°—

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).

Mon, 1959° / 25°0Mostly clear
59 °Mostly clear

Merna, Monday, 19 October

Mostly clear. High 59°, low 25°.

Pressure30.09 inHg
Wind5.2 mph SE
Humidity45%
Visibility6.2 mi
Dew point28°
Tue, 2054° / 27°0.07Light rain
54 °Light rain

Merna, Tuesday, 20 October

Light rain. High 54°, low 27°.

Pressure30.09 inHg
Wind5 mph SE
Humidity47%
Visibility6.2 mi
Dew point34°
Wed, 2154° / 36°0.06Light rain
54 °Light rain

Merna, Wednesday, 21 October

Light rain. High 54°, low 36°.

Pressure30.18 inHg
Wind6.4 mph SE
Humidity61%
Visibility6.2 mi
Dew point38°
Thu, 2253° / 36°0Overcast
53 °Overcast

Merna, Thursday, 22 October

Overcast. High 53°, low 36°.

Pressure30.09 inHg
Wind5.8 mph SE
Humidity73%
Visibility6.2 mi
Dew point40°
Fri, 2342° / 32°0.43Rain
42 °Rain

Merna, Friday, 23 October

Rain. High 42°, low 32°.

Pressure29.77 inHg
Wind7.7 mph W
Humidity72%
Visibility—
Dew point33°
Sat, 2442° / 28°0Partly cloudy
42 °Partly cloudy

Merna, Saturday, 24 October

Partly cloudy. High 42°, low 28°.

Pressure30.12 inHg
Wind6.9 mph NW
Humidity61%
Visibility—
Dew point25°
Sun, 2548° / 26°0Partly cloudy
48 °Partly cloudy

Merna, Sunday, 25 October

Partly cloudy. High 48°, low 26°.

Pressure30.18 inHg
Wind4.6 mph W
Humidity29%
Visibility—
Dew point11°
Mon, 2646° / 29°0Clear
46 °Clear

Merna, Monday, 26 October

Clear. High 46°, low 29°.

Pressure30.03 inHg
Wind4.4 mph NW
Humidity43%
Visibility—
Dew point20°
Tue, 2750° / 29°0Clear
50 °Clear

Merna, Tuesday, 27 October

Clear. High 50°, low 29°.

Pressure29.88 inHg
Wind6.4 mph SE
Humidity41%
Visibility—
Dew point20°
Wed, 2850° / 33°0.1Snow
50 °Snow

Merna, Wednesday, 28 October

Snow. High 50°, low 33°.

Pressure29.71 inHg
Wind15 mph S
Humidity47%
Visibility—
Dew point27°
Thu, 2937° / 21°0.34Snow
37 °Snow

Merna, Thursday, 29 October

Snow. High 37°, low 21°.

Pressure29.65 inHg
Wind20.6 mph W
Humidity69%
Visibility—
Dew point17°
Fri, 3029° / 18°0.01Light snow
29 °Light snow

Merna, Friday, 30 October

Light snow. High 29°, low 18°.

Pressure29.91 inHg
Wind9.5 mph W
Humidity57%
Visibility—
Dew point13°
Sat, 3127° / 15°0Overcast
27 °Overcast

Merna, Saturday, 31 October

Overcast. High 27°, low 15°.

Pressure30.24 inHg
Wind16 mph NW
Humidity62%
Visibility—
Dew point13°
Sun, 0133° / 19°0Light snow
33 °Light snow

Merna, Sunday, 1 November

Light snow. High 33°, low 19°.

Pressure30.18 inHg
Wind12 mph NW
Humidity71%
Visibility—
Dew point22°
Mon, 0240° / 22°0.02Light snow
40 °Light snow

Merna, Monday, 2 November

Light snow. High 40°, low 22°.

Pressure29.74 inHg
Wind9.5 mph W
Humidity50%
Visibility—
Dew point19°
From day 17 onward the outlook is built from 60-year climate statistics
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)
Sat, 1435° / 14°0.06Climate normal
35 °Climate normal

Merna, Saturday, 14 November

Climate normal for this date — 60-year average.

Average high35°
Average low14°
Average precipitation0.06 in
Chance of precipitation27%
Record high56° (1999)
Record low-14° (2000)
Sun, 1535° / 11°0.02Climate normal
35 °Climate normal

Merna, Sunday, 15 November

Climate normal for this date — 60-year average.

Average high35°
Average low11°
Average precipitation0.02 in
Chance of precipitation13%
Record high55° (1999)
Record low-17° (1964)
Mon, 1635° / 13°0.03Climate normal
35 °Climate normal

Merna, Monday, 16 November

Climate normal for this date — 60-year average.

Average high35°
Average low13°
Average precipitation0.03 in
Chance of precipitation22%
Record high51° (1999)
Record low-15° (1980)

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.