Weather in Ammon, WY
Ammon, Friday, 9 October, 04:13
Clear. Feels like 42°. High 84°, low 44°.
Monthly outlook for Ammon, WY: average high 65.4°, average low 44.9°. That is 4.1° above the climate normal for October. Precipitation is expected on 4 days (about 2.3 inches), against a normal of 3 days and 0.8 inches. The warmest day looks like 9 October (83.7°), the coolest 16 October (29.8°).
Ten-day blocks vs climate normal
| Period | Forecast high | Normal | Difference |
|---|---|---|---|
| 9 October – 18 October | 66.3° | 58.4° | +4.4° |
| 19 October – 28 October | 63.9° | 56.2° | +4.3° |
| 29 October – 7 November | at normal | 49° | — |
October records over 66 years
Climate normals and records are computed from the nearest reference point — Lost Springs (14 mi).
0
Ammon, Saturday, 10 October
Mostly clear. High 82°, low 56°.
0.35
Ammon, Sunday, 11 October
Rain. High 75°, low 55°.
0.01Ammon, Monday, 12 October
Light rain. High 73°, low 46°.
0.23Ammon, Tuesday, 13 October
Rain. High 52°, low 42°.
0.92Ammon, Wednesday, 14 October
Rain. High 58°, low 45°.
0.78
Ammon, Thursday, 15 October
Snow. High 51°, low 34°.
0.02Ammon, Friday, 16 October
Light snow. High 50°, low 30°.
0
Ammon, Saturday, 17 October
Overcast. High 69°, low 40°.
0Ammon, Sunday, 18 October
Overcast. High 70°, low 48°.
0
Ammon, Monday, 19 October
Clear. High 73°, low 48°.
0Ammon, Tuesday, 20 October
Clear. High 74°, low 52°.
0
Ammon, Wednesday, 21 October
Partly cloudy. High 59°, low 44°.
0Ammon, Thursday, 22 October
Overcast. High 47°, low 44°.
0Ammon, Friday, 23 October
Mostly clear. High 66°, low 41°.
0Ammon, Saturday, 24 October
Overcast. High 64°, low 51°.
0.03Ammon, Sunday, 25 October
Climate normal for this date — 60-year average.
0.04Ammon, Monday, 26 October
Climate normal for this date — 60-year average.
0.03Ammon, Tuesday, 27 October
Climate normal for this date — 60-year average.
0.07Ammon, Wednesday, 28 October
Climate normal for this date — 60-year average.
0.07Ammon, Thursday, 29 October
Climate normal for this date — 60-year average.
0.04Ammon, Friday, 30 October
Climate normal for this date — 60-year average.
0.04Ammon, Saturday, 31 October
Climate normal for this date — 60-year average.
0.05Ammon, Sunday, 1 November
Climate normal for this date — 60-year average.
0.05Ammon, Monday, 2 November
Climate normal for this date — 60-year average.
0.04Ammon, Tuesday, 3 November
Climate normal for this date — 60-year average.
0.01Ammon, Wednesday, 4 November
Climate normal for this date — 60-year average.
0.02Ammon, Thursday, 5 November
Climate normal for this date — 60-year average.
0.03Ammon, Friday, 6 November
Climate normal for this date — 60-year average.
0.02Ammon, Saturday, 7 November
Climate normal for this date — 60-year average.
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.
Sun and moon today
Weather history
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