Ammon, United States experiences average highs of 15°C (59°F) and lows of 2°C (36°F) throughout the year. Rainfall is moderate, averaging about 8 rainy days per month. Sunshine is abundant, averaging about 10 hours per day. Average highs have warmed by 0.9°C (1.6°F) across the available records.
Ammon, United States Weather & Climate 2026
Monthly climate averages for Ammon, United States. Based on 10-year ERA5 reanalysis data.
Climate Overview
Drier season: Jun–Nov 
Wetter season: Jan–Dec At-a-Glance Climate Summary
Live Weather & Air Quality
Key figures
Climate Score
5/10
Best: June, July, August, September
UV Index
5
Low
Temperature 15°C / 2°C
Feels Like 11°C / -1°C
Rainy Days 8
Rainfall 34 mm
Sunshine 10 h
Humidity 58%
Wind Speed 17 km/h
Dew Point 0°C
Snow Days 9 days
Frost Days 20 days
Hottest Month
32°C
July
Avg Low16°C
Rain2days
Coldest Month
-10°C
January
Avg High-1°C
Rain9days
Driest Month
2days
July
Avg High32°C
Avg Low16°C
Windiest Month
20 km/h
June (Gusts 46)
Worst Time to Visit
Consider avoiding January, February, March, December due to very cold temperatures, frequent rain.
Sun Position
Sunrise 05:48
Daylight 15.4h
Sunset 21:12
Live conditions—
Ammon on the map · live conditions
Ammon, United States
- Continent
- Americas
- Country
- United States
- City
- Ammon
- Population
- 15K
- Elevation
- 1,437 m
- Coordinates
- 43.47°, -111.97°
Seasonal Breakdown
Spring
Mar–May
Avg High 13°C
Avg Low 1°C
Rain 11 days/mo
Summer
Jun–Aug
Avg High 30°C
Avg Low 14°C
Rain 4 days/mo
3/3 best months
Autumn
Sep–Nov
Avg High 16°C
Avg Low 3°C
Rain 7 days/mo
1/3 best months
Winter
Dec–Feb
Avg High 0°C
Avg Low -8°C
Rain 10 days/mo
Climate Charts
Based on historical averages (2016–2025)
Monthly Temperatures
HighLowShaded bands show the typical range across the available yearly records.
Line chart showing monthly temperatures. Jan: -1°C / -10°C . Feb: 1°C / -7°C . Mar: 7°C / -3°C . Apr: 13°C / 0°C . May: 20°C / 5°C . Jun: 27°C / 11°C . Jul: 32°C / 16°C . Aug: 31°C / 15°C . Sep: 25°C / 10°C . Oct: 15°C / 3°C . Nov: 7°C / -3°C . Dec: 0°C / -8°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 39 mm. Feb: 38 mm. Mar: 44 mm. Apr: 43 mm. May: 50 mm. Jun: 24 mm. Jul: 8 mm. Aug: 17 mm. Sep: 34 mm. Oct: 42 mm. Nov: 27 mm. Dec: 44 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 80%. Feb: 76%. Mar: 69%. Apr: 57%. May: 54%. Jun: 42%. Jul: 31%. Aug: 36%. Sep: 44%. Oct: 58%. Nov: 68%. Dec: 77%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 13 km/h . Feb: 17 km/h . Mar: 17 km/h . Apr: 19 km/h . May: 18 km/h . Jun: 20 km/h . Jul: 18 km/h . Aug: 17 km/h . Sep: 16 km/h . Oct: 16 km/h . Nov: 15 km/h . Dec: 14 km/h .
Sunshine
Sunshine
Sunshine: Jan: 6h. Feb: 8h. Mar: 10h. Apr: 11h. May: 12h. Jun: 14h. Jul: 14h. Aug: 12h. Sep: 11h. Oct: 9h. Nov: 7h. Dec: 6h.
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 3. Feb: UV 4. Mar: UV 5. Apr: UV 7. May: UV 7. Jun: UV 8. Jul: UV 8. Aug: UV 7. Sep: UV 6. Oct: UV 4. Nov: UV 3. Dec: UV 2.
Monthly Daylight Hours
Daylight12h reference
Monthly Dew Point & Comfort
Dew Point Dry Comfortable Humid Muggy Oppressive
Snow Days
Snow DaysSnowfall
Snow Days: Jan: 15 days. Feb: 14 days. Mar: 11 days. Apr: 6 days. May: 1 days. Jun: 0 days. Jul: 0 days. Aug: 0 days. Sep: 0 days. Oct: 3 days. Nov: 7 days. Dec: 15 days.
Climate Trends
Average highs have warmed by 0.9°C (1.6°F) across the available records. Average rainfall has remained broadly steady.
2016 to 2025
Avg high Avg rainfall
Climate summary
| Last 12 months | All years | |
|---|---|---|
| Hottest month | Jul 2025 · 32°C | Jul · 32°C |
| Coldest month | Jan 2025 · -14°C | Jan · -10°C |
| Wettest month | Feb 2025 · 65 mm | May · 50 mm |
| Windiest month | Apr 2025 · 20 km/h | Jun · 20 km/h |
Month-by-Month Weather Table
January
Poor 
February
Poor March
Poor April
Poor May
Fair June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Fair November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | -1°C / -10°C | -5°C / -14°C | 9days (39 mm) Wet | 6.2h Fair | 80% Humid | 3 Moderate | Poor | View Details |
| February | 1°C / -7°C | -3°C / -12°C | 10days (38 mm) Wet | 7.6h Good | 76% Humid | 3.8 Moderate | Poor | View Details |
| March | 7°C / -3°C | 4°C / -8°C | 12days (44 mm) Wet | 9.5h Good | 69% Muggy | 5.3 High | Poor | View Details |
| April | 13°C / 0°C | 10°C / -3°C | 11days (43 mm) Wet | 11.1h Excellent | 57% Moderate | 6.5 High | Poor | View Details |
| May | 20°C / 5°C | 17°C / 2°C | 11days (50 mm) Wet | 12.2h Excellent | 54% Moderate | 7.4 Very High | Fair | View Details |
| June best | 27°C / 11°C | 24°C / 9°C | 5days (24 mm) Good | 13.5h Excellent | 42% Moderate | 8 Very High | Excellent | View Details |
| July best | 32°C / 16°C | 30°C / 14°C | 2days (8 mm) Excellent | 13.7h Excellent | 31% Comfortable | 8.1 Very High | Excellent | View Details |
| August best | 31°C / 15°C | 28°C / 13°C | 4days (17 mm) Good | 12.4h Excellent | 36% Comfortable | 7.3 Very High | Excellent | View Details |
| September best | 25°C / 10°C | 22°C / 7°C | 5days (34 mm) Good | 10.8h Excellent | 44% Moderate | 6 High | Excellent | View Details |
| October | 15°C / 3°C | 12°C / -1°C | 8days (42 mm) Wet | 9.2h Good | 58% Moderate | 4.3 Moderate | Fair | View Details |
| November | 7°C / -3°C | 3°C / -7°C | 8days (27 mm) Wet | 7.3h Good | 68% Muggy | 2.8 Moderate | Poor | View Details |
| December | 0°C / -8°C | -4°C / -12°C | 10days (44 mm) Wet | 5.6h Fair | 77% Humid | 2.2 Moderate | Poor | View Details |
Compare Nearby City Climates
Frequently Asked Questions
The best months to visit Ammon are June, July, August, September, when temperatures are comfortable and rainfall is at its lowest. This is based on 10-year climate averages for Ammon, scoring temperature, rainfall, humidity, and sunshine hours.
The hottest month in Ammon is July, with average daytime highs of 32°C (90°F). Plan outdoor activities for early morning or late afternoon if visiting during this period.
The coldest month in Ammon is January, with average overnight lows of -10°C (15°F). Pack warm layers and expect shorter daylight hours during this period.
The wettest month in Ammon is May, averaging 50mm of precipitation across 11 rainy days. An umbrella or waterproof jacket is essential.
The rainy season in Ammon runs through March, April, May, February, with the heaviest rainfall in March. Based on 10-year averages for Ammon.
Ammon receives approximately 119 sunshine hours per year. The sunniest month is July with around 14 hours. Based on climate data for Ammon.
The least favorable months to visit Ammon are January, February, March, December, primarily due to very cold temperatures, frequent rain. For the best conditions, consider June, July, August, September instead.
The annual average UV index in Ammon is 5, classified as moderate. Standard sun protection (sunscreen, hat) is recommended during prolonged outdoor exposure.
Average humidity in Ammon is 58%, classified as moderate. Humidity levels are generally comfortable and should not affect outdoor activities for most people.
Yes, Ammon receives snow. Months with snowfall average 9 snow days and 14 cm (6 in) of accumulation, with about 20 frost days during winter.
Average wind speeds in Ammon are 17 km/h (11 mph). The windiest month is June with peak winds reaching 20 km/h (12 mph) (gusts up to 46 km/h / 28 mph).
Ammon averages 8 clear-sky days per month with overall cloud cover around 49%. The clearest skies occur in July.
The annual average dew point in Ammon is 0°C (32°F), which feels dry and comfortable. Outdoor activities are comfortable year-round from a humidity standpoint.
Ammon has a Hot-Summer Continental (dry) climate, classified as Dsa under the Köppen system. Continental climates experience extreme temperature ranges — hot summers and cold, snowy winters.
The 'feels like' temperature in Ammon ranges from -1°C (30°F) to 11°C (52°F) on average. Wind chill makes winters feel noticeably colder than the actual temperature — layered clothing is recommended.
Yes, June is a great time to visit Ammon. It earns a climate score of 9/10 with Excellent.
For June in Ammon, pack Warm evening layer, Breathable clothing, Sunscreen (SPF 30+), Sun hat, Sunglasses. With average highs of 27°C (80°F) and 5 rainy days, these essentials will keep you comfortable.
Data Source
Climate data derived from ERA5 reanalysis (ECMWF), averaged over 2016–2025. Sea surface temperature from marine reanalysis data. Climate scores and seasonal estimates are computed by WorldStats.
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