Monthly outlook for Ammon, WY: average high 62.9°, average low 44.4°. That is 3.1° above the climate normal for October. Precipitation is expected on 5 days (about 2.3 inches), against a normal of 3 days and 0.7 inches. The warmest day looks like 22 October (75.5°), the coolest 16 October (30.5°).
62.9°/44.4°
Average high / low
+3.1°
Above normal
5 / 3
Wet days / normal
2.3 in
Precipitation this month
Ten-day blocks vs climate normal
Period
Forecast high
Normal
Difference
11 October – 20 October
62.2°
58.1°
+2.3°
21 October – 30 October
64.2°
54.5°
+5.4°
31 October – 9 November
at normal
48.3°
—
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).
Mon, 1261° / 46°0.08
61 °
Ammon, Monday, 12 October
Rain. High 61°, low 46°.
Pressure29.88 inHg
Wind10.2 mph N
Humidity57%
Visibility1.1 mi
Dew point41°
Tue, 1359° / 43°0.74
59 °
Ammon, Tuesday, 13 October
Heavy rain. High 59°, low 43°.
Pressure29.88 inHg
Wind13.5 mph SE
Humidity63%
Visibility6.2 mi
Dew point45°
Wed, 1446° / 43°0.56
46 °
Ammon, Wednesday, 14 October
Rain. High 46°, low 43°.
Pressure30.15 inHg
Wind9.7 mph SE
Humidity91%
Visibility2.4 mi
Dew point43°
Thu, 1545° / 42°0.78
45 °
Ammon, Thursday, 15 October
Rain. High 45°, low 42°.
Pressure30.39 inHg
Wind13.6 mph N
Humidity92%
Visibility—
Dew point41°
Fri, 1653° / 31°0.01
53 °
Ammon, Friday, 16 October
Light rain. High 53°, low 31°.
Pressure30.62 inHg
Wind13.7 mph SE
Humidity53%
Visibility—
Dew point29°
Sat, 1771° / 33°0
71 °
Ammon, Saturday, 17 October
Clear. High 71°, low 33°.
Pressure30.18 inHg
Wind14 mph SE
Humidity29%
Visibility—
Dew point24°
Sun, 1873° / 52°0
73 °
Ammon, Sunday, 18 October
Clear. High 73°, low 52°.
Pressure30.00 inHg
Wind17.4 mph W
Humidity21%
Visibility—
Dew point26°
Mon, 1975° / 53°0
75 °
Ammon, Monday, 19 October
Clear. High 75°, low 53°.
Pressure29.88 inHg
Wind12.9 mph W
Humidity17%
Visibility—
Dew point22°
Tue, 2071° / 52°0
71 °
Ammon, Tuesday, 20 October
Mostly clear. High 71°, low 52°.
Pressure29.83 inHg
Wind19.7 mph W
Humidity21%
Visibility—
Dew point23°
Wed, 2164° / 46°0
64 °
Ammon, Wednesday, 21 October
Clear. High 64°, low 46°.
Pressure30.06 inHg
Wind13.7 mph NW
Humidity27%
Visibility—
Dew point24°
Thu, 2276° / 46°0
76 °
Ammon, Thursday, 22 October
Overcast. High 76°, low 46°.
Pressure30.00 inHg
Wind12.9 mph SW
Humidity21%
Visibility—
Dew point25°
Fri, 2363° / 49°0
63 °
Ammon, Friday, 23 October
Clear. High 63°, low 49°.
Pressure30.06 inHg
Wind20.7 mph SW
Humidity31%
Visibility—
Dew point30°
Sat, 2456° / 40°0
56 °
Ammon, Saturday, 24 October
Clear. High 56°, low 40°.
Pressure30.36 inHg
Wind7 mph SE
Humidity33%
Visibility—
Dew point22°
Sun, 2562° / 40°0
62 °
Ammon, Sunday, 25 October
Clear. High 62°, low 40°.
Pressure30.33 inHg
Wind8.6 mph NW
Humidity33%
Visibility—
Dew point26°
Mon, 2664° / 42°0
64 °
Ammon, Monday, 26 October
Clear. High 64°, low 42°.
Pressure30.18 inHg
Wind15.6 mph SE
Humidity22%
Visibility—
Dew point19°
From day 17 onward the outlook is built from 60-year climate statistics
Tue, 2754° / 33°0.03
54 °
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°0.07
53 °
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°0.07
51 °
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°0.04
49 °
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°0.04
48 °
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°0.05
48 °
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°0.05
48 °
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°0.04
48 °
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°0.01
49 °
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°0.02
49 °
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°0.03
49 °
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°0.02
49 °
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)
Sun, 0848° / 29°0.05
48 °
Ammon, Sunday, 8 November
Climate normal for this date — 60-year average.
Average high48°
Average low29°
Average precipitation0.05 in
Chance of precipitation20%
Record high72° (1999)
Record low2° (2000)
Mon, 0946° / 28°0.04
46 °
Ammon, Monday, 9 November
Climate normal for this date — 60-year average.
Average high46°
Average low28°
Average precipitation0.04 in
Chance of precipitation27%
Record high70° (2016)
Record low-4° (1960)
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.