As of 09:17 MDT

Weather in Ammon, WY

51°Current weather

Ammon, Friday, 9 October, 09:17

Mostly clear. Feels like 48°. High 84°, low 50°.

Pressure29.85 inHg
Wind3.1 mph W
Humidity41%
Visibility6.2 mi
Dew point30°

Monthly outlook for Ammon, WY: average high 65.2°, average low 43.4°. That is 4° above the climate normal for October. Precipitation is expected on 3 days (about 1.2 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 9 October (84°), the coolest 23 October (31.2°).

65.2°/43.4°
Average high / low
+4°
Above normal
3 / 3
Wet days / normal
1.2 in
Precipitation this month

Ten-day blocks vs climate normal

PeriodForecast highNormalDifference
9 October – 18 October65°58.4°+3.6°
19 October – 28 October65.6°56.2°+5.2°
29 October – 7 Novemberat normal49°—

October records over 66 years

85.5°4 October 1963All-time high
-9.8°26 October 2020All-time low

Climate normals and records are computed from the nearest reference point — Lost Springs (14 mi).

Sat, 1082° / 54°0Partly cloudy
82 °Partly cloudy

Ammon, Saturday, 10 October

Partly cloudy. High 82°, low 54°.

Pressure29.53 inHg
Wind13.4 mph SW
Humidity18%
Visibility6.2 mi
Dew point33°
Sun, 1172° / 54°0.29Rain
72 °Rain

Ammon, Sunday, 11 October

Rain. High 72°, low 54°.

Pressure29.68 inHg
Wind5.7 mph E
Humidity46%
Visibility6.2 mi
Dew point46°
Mon, 1271° / 44°0.03Light rain
71 °Light rain

Ammon, Monday, 12 October

Light rain. High 71°, low 44°.

Pressure29.68 inHg
Wind12 mph W
Humidity35%
Visibility6.2 mi
Dew point43°
Tue, 1353° / 41°0.26Rain
53 °Rain

Ammon, Tuesday, 13 October

Rain. High 53°, low 41°.

Pressure29.97 inHg
Wind15 mph SE
Humidity77%
Visibility—
Dew point42°
Wed, 1447° / 45°0.62Rain
47 °Rain

Ammon, Wednesday, 14 October

Rain. High 47°, low 45°.

Pressure29.97 inHg
Wind9.3 mph NW
Humidity94%
Visibility—
Dew point45°
Thu, 1553° / 45°0Light rain
53 °Light rain

Ammon, Thursday, 15 October

Light rain. High 53°, low 45°.

Pressure30.15 inHg
Wind21.9 mph N
Humidity42%
Visibility—
Dew point29°
Fri, 1647° / 34°0.01Light snow
47 °Light snow

Ammon, Friday, 16 October

Light snow. High 47°, low 34°.

Pressure30.56 inHg
Wind21.5 mph NW
Humidity38%
Visibility—
Dew point17°
Sat, 1774° / 34°0Clear
74 °Clear

Ammon, Saturday, 17 October

Clear. High 74°, low 34°.

Pressure30.09 inHg
Wind13.6 mph W
Humidity13%
Visibility—
Dew point10°
Sun, 1866° / 41°0Overcast
66 °Overcast

Ammon, Sunday, 18 October

Overcast. High 66°, low 41°.

Pressure30.06 inHg
Wind13 mph SE
Humidity19%
Visibility—
Dew point15°
Mon, 1975° / 44°0Partly cloudy
75 °Partly cloudy

Ammon, Monday, 19 October

Partly cloudy. High 75°, low 44°.

Pressure29.85 inHg
Wind8.2 mph S
Humidity13%
Visibility—
Dew point14°
Tue, 2063° / 50°0Overcast
63 °Overcast

Ammon, Tuesday, 20 October

Overcast. High 63°, low 50°.

Pressure29.97 inHg
Wind22.2 mph N
Humidity22%
Visibility—
Dew point22°
Wed, 2169° / 43°0Clear
69 °Clear

Ammon, Wednesday, 21 October

Clear. High 69°, low 43°.

Pressure30.03 inHg
Wind13.3 mph W
Humidity26%
Visibility—
Dew point24°
Thu, 2253° / 40°0Partly cloudy
53 °Partly cloudy

Ammon, Thursday, 22 October

Partly cloudy. High 53°, low 40°.

Pressure30.30 inHg
Wind20.9 mph NW
Humidity32%
Visibility—
Dew point21°
Fri, 2358° / 31°0Clear
58 °Clear

Ammon, Friday, 23 October

Clear. High 58°, low 31°.

Pressure30.24 inHg
Wind12.9 mph S
Humidity25%
Visibility—
Dew point14°
Sat, 2476° / 42°0Clear
76 °Clear

Ammon, Saturday, 24 October

Clear. High 76°, low 42°.

Pressure29.97 inHg
Wind7.6 mph NW
Humidity11%
Visibility—
Dew point10°
From day 17 onward the outlook is built from 60-year climate statistics
Sun, 2556° / 35°0.03Climate normal
56 °Climate normal

Ammon, Sunday, 25 October

Climate normal for this date — 60-year average.

Average high56°
Average low35°
Average precipitation0.03 in
Chance of precipitation13%
Record high77° (2014)
Record low5° (2020)
Mon, 2655° / 35°0.04Climate normal
55 °Climate normal

Ammon, Monday, 26 October

Climate normal for this date — 60-year average.

Average high55°
Average low35°
Average precipitation0.04 in
Chance of precipitation25%
Record high77° (1977)
Record low-10° (2020)
Tue, 2754° / 33°0.03Climate normal
54 °Climate normal

Ammon, Tuesday, 27 October

Climate normal for this date — 60-year average.

Average high54°
Average low33°
Average precipitation0.03 in
Chance of precipitation15%
Record high78° (2016)
Record low-1° (2020)
Wed, 2853° / 33°0.07Climate normal
53 °Climate normal

Ammon, Wednesday, 28 October

Climate normal for this date — 60-year average.

Average high53°
Average low33°
Average precipitation0.07 in
Chance of precipitation22%
Record high73° (1990)
Record low-5° (2019)
Thu, 2951° / 32°0.07Climate normal
51 °Climate normal

Ammon, Thursday, 29 October

Climate normal for this date — 60-year average.

Average high51°
Average low32°
Average precipitation0.07 in
Chance of precipitation28%
Record high76° (1968)
Record low-1° (2019)
Fri, 3049° / 31°0.04Climate normal
49 °Climate normal

Ammon, Friday, 30 October

Climate normal for this date — 60-year average.

Average high49°
Average low31°
Average precipitation0.04 in
Chance of precipitation23%
Record high73° (1968)
Record low-8° (2019)
Sat, 3148° / 31°0.04Climate normal
48 °Climate normal

Ammon, Saturday, 31 October

Climate normal for this date — 60-year average.

Average high48°
Average low31°
Average precipitation0.04 in
Chance of precipitation20%
Record high72° (1999)
Record low-2° (1991)
Sun, 0148° / 31°0.05Climate normal
48 °Climate normal

Ammon, Sunday, 1 November

Climate normal for this date — 60-year average.

Average high48°
Average low31°
Average precipitation0.05 in
Chance of precipitation23%
Record high70° (1988)
Record low2° (1991)
Mon, 0248° / 29°0.05Climate normal
48 °Climate normal

Ammon, Monday, 2 November

Climate normal for this date — 60-year average.

Average high48°
Average low29°
Average precipitation0.05 in
Chance of precipitation22%
Record high72° (2008)
Record low-10° (1995)
Tue, 0348° / 29°0.04Climate normal
48 °Climate normal

Ammon, Tuesday, 3 November

Climate normal for this date — 60-year average.

Average high48°
Average low29°
Average precipitation0.04 in
Chance of precipitation20%
Record high68° (2015)
Record low-7° (1967)
Wed, 0449° / 29°0.01Climate normal
49 °Climate normal

Ammon, Wednesday, 4 November

Climate normal for this date — 60-year average.

Average high49°
Average low29°
Average precipitation0.01 in
Chance of precipitation12%
Record high71° (1983)
Record low4° (1967)
Thu, 0549° / 30°0.02Climate normal
49 °Climate normal

Ammon, Thursday, 5 November

Climate normal for this date — 60-year average.

Average high49°
Average low30°
Average precipitation0.02 in
Chance of precipitation15%
Record high71° (2001)
Record low-2° (1967)
Fri, 0649° / 30°0.03Climate normal
49 °Climate normal

Ammon, Friday, 6 November

Climate normal for this date — 60-year average.

Average high49°
Average low30°
Average precipitation0.03 in
Chance of precipitation20%
Record high71° (1999)
Record low-6° (1971)
Sat, 0749° / 30°0.02Climate normal
49 °Climate normal

Ammon, Saturday, 7 November

Climate normal for this date — 60-year average.

Average high49°
Average low30°
Average precipitation0.02 in
Chance of precipitation17%
Record high73° (1999)
Record low-4° (2003)

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 Ammon, 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 Ammon, 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.