Nampa, Idaho, located in the United States, experiences distinct weather patterns throughout the year.
The weather in Nampa sees hot summers and cold winters.
From June 13 to September 10, the daily high temperature averages above 81°F, with July being the hottest month at an average high of 91°F and a low of 59°F.
Conversely, the cold season lasts from November 18 to February 18, where the average daily high temperature stays below 47°F.
Rainfall in Nampa is relatively low compared to the US average. The city receives about 11 inches of rain annually.
The month with the most rainfall is March, which sees about 1.46 inches of precipitation over 14.3 days.
Despite this, residents enjoy a considerable amount of sunshine year-round, totaling around 3736.56 hours annually.
For those looking to experience a regional climate rich in seasonal variety, Nampa offers a blend of sunny days and occasional rain, making it an intriguing place to live or visit.
The city’s weather patterns are well-defined, providing a clear picture of what to expect during different times of the year.
Average Temperature in Nampa, Idaho
Nampa, Idaho experiences a wide range of temperatures throughout the year. In January, the coldest month, temperatures often dip to a low of 23°F.
Conversely, July is typically the warmest month, with daytime highs reaching up to 92°F.
Here’s a snapshot of average temperatures by month:
| Month | Average High | Average Low |
|---|---|---|
| January | 38°F | 23°F |
| February | 46°F | 29°F |
| March | 55°F | 35°F |
| April | 63°F | 40°F |
| May | 72°F | 48°F |
| June | 82°F | 55°F |
| July | 92°F | 61°F |
| August | 90°F | 59°F |
| September | 79°F | 50°F |
| October | 65°F | 38°F |
| November | 50°F | 29°F |
| December | 38°F | 23°F |
The temperature varies significantly between day and night.
During peak summer months like July, daytime highs can be around 92°F, while nights can cool down to 61°F.
Winters are milder but can experience freezing temperatures, especially at night.
The unique semi-arid climate of Nampa results in hot summers and relatively mild winters. You can find more on temperature and its effects on Nampa.
Throughout the year, temperatures rarely fall below 8°F or rise above 100°F. This makes for a range that accommodates both colder and hotter conditions, providing a diverse climate.
The average yearly temperature in Nampa hovers around 54.1°F, considering both daytime highs and nighttime lows. This temperature range impacts daily life, influencing activities and daily routines throughout the seasons.
Average Precipitation in Nampa, Idaho
Nampa, Idaho experiences varied precipitation throughout the year. It sees both rainfall and snowfall, with rainfall peaking in certain months and lower snow amounts during winter.
Average Rainfall in Nampa, Idaho
Nampa gets moderate rainfall, with most rain occurring in spring. March is the wettest month, averaging about 1.46 inches over roughly 14 days.
The rainiest season spans from March to May.
Rainfall decreases in summer, with July seeing the least rain, averaging only 0.25 inches.
Autumn brings a slight increase in rain, but it remains relatively low compared to the spring.
Rainfall picks up again in late fall as temperatures drop.
For those planning activities, spring would require waterproof gear, while summer offers fewer rainy days.
Average Snow in Nampa, Idaho
Snowfall in Nampa is more common in the winter months.
The coldest month is December, with low temperatures around 24°F and an average high of 37°F.
Snowfall typically begins in November and can last until February. However, it is usually light compared to other northern areas.
December and January receive the most snow, though totals rarely exceed a few inches at a time.
Snow and ice can affect travel during this period.
Overall, while snow is present, it does not dominate the winter months in Nampa as it does in other Idaho regions. Winter visitors should still prepare for icy roads and possible snow.
Average Sun in Nampa, Idaho
Nampa, Idaho enjoys a significant amount of sunlight throughout the year. The climate features a high number of sunny days and varied daylight hours, heavily influenced by seasons.
Average Daily Shortwave Solar Energy in Nampa, Idaho
In Nampa, Idaho, the average daily shortwave solar energy varies by season.
The highest solar energy usually occurs in the summer months, peaking in July. Throughout July, there is plenty of sun, with daily solar energy often reaching around 7.4 kWh/m².
Winter experiences significantly less solar energy. During December, the daily average can drop to as low as 1.7 kWh/m².
This change is due to the shorter daylight hours and increased cloud cover during the colder months.
Nampa receives approximately 220 days of sunshine annually. This contributes to an overall high UV index, especially in summer, so taking protective measures is advisable.
Average daylight hours also vary, with longer days in summer and shorter days in winter.
Average Humidity in Nampa, Idaho
The average humidity in Nampa, Idaho, varies throughout the year.
During the summer months, humidity levels tend to be lower, making the hot temperatures more bearable. July usually has the lowest humidity around 20% to 30%.
In contrast, winter months bring higher humidity levels. December and January often experience humidity levels of 70% to 80%.
| Season | Average Humidity (%) |
|---|---|
| Winter | 70% – 80% |
| Spring | 40% – 60% |
| Summer | 20% – 30% |
| Fall | 40% – 60% |
This variation helps define Nampa’s climate. The difference in humidity levels can impact how temperatures feel. For example, 22°F in winter can feel colder when the air is damp.
Nampa sees a yearly average of about 55% humidity. This level keeps the city from feeling too dry or too humid most of the year.
Keeping in mind these levels of humidity, residents often find Nampa’s climate to be reasonably comfortable. For more detailed information on average humidity levels in Idaho, you can check out this link.
Average Wind in Nampa, Idaho
Nampa, Idaho experiences a variety of wind speeds throughout the year. The average wind speed varies considerably based on the month and weather conditions.
The winds in Nampa are generally calm, but they can pick up during certain times of the year. On average, the wind speed ranges from light breezes to moderate winds.
The windiest month in Nampa is usually March, with an average wind speed of around 8.3 mph.
Gusts can occasionally reach higher speeds, providing a brisk atmosphere.
Wind conditions are often measured and reported to help residents plan their outdoor activities.
For those interested in wind-related sports, detailed wind statistics can be found on websites specializing in wind reports and weather forecasts.
Here’s a brief overview of the average wind speeds:
- January: 6.8 mph
- May: 7.5 mph
- August: 6.2 mph
- November: 6.9 mph
Knowing the average wind speeds can help residents and visitors prepare for their activities, ensuring they are appropriately dressed and equipped. It also provides essential information for farming, aviation, and other industries that depend on accurate weather data.
Average Air Quality in Nampa, Idaho
Nampa, Idaho generally enjoys good air quality throughout the year. The Air Quality Index (AQI) frequently falls within the “Good” category. This indicates that air pollution levels pose little or no risk to residents.
Key Air Quality Metrics
- PM2.5 (fine particulate matter): 5 AQI
- PM10 (respirable particulate matter): 11 AQI
- Nitrogen Dioxide (NO2): 18 AQI
- Sulfur Dioxide (SO2): 2 AQI
- Ozone (O3): 56 AQI
- Carbon Monoxide (CO): 2 AQI
Additional Environmental Conditions
Dry Climate: Nampa has a semi-arid climate, which often results in dry conditions and minimal annual rainfall. This can influence the dispersion of particulate matter in the air.
Pressure and Visibility: Atmospheric pressure can fluctuate, but remains relatively stable, contributing to consistent air quality. Visibility tends to be good due to low levels of pollution and minimal haze.
Seasonal Variations: While daily air quality can change, notably during wildfire season, the city’s average AQI remains low throughout the year. Winter inversions can temporarily elevate pollution levels, but these events are infrequent.
Nampa’s Clean Air Locations
Certain areas in Nampa, like Nampa Ridgecrest, often report particularly low AQI levels, proving beneficial for individuals with respiratory conditions.
Topography of Nampa, Idaho
Nampa is located in Canyon County, in the southwestern part of Idaho. It is part of the Boise Valley, which provides a varied landscape.
The elevation of Nampa ranges from 2,440 to 2,470 feet.
The city is uniquely positioned between two significant mountain ranges. To the north, it is bordered by the Front Range of the Rocky Mountains. To the south, the Owyhee Mountains create a stunning backdrop.
Nampa features a high desert terrain, characterized by its arid, dry environment. This terrain is interspersed with rolling hills and flat plains.
These features contribute to the city’s overall mild climate and scenic beauty.
The topographic map of Nampa provides detailed information on the city’s elevation and terrain.
This map helps to visualize the rugged and varied landscape that makes up the area. The city itself is generally flat, with slight undulations in terrain.
Geographic Coordinates:
- Latitude: 43.52346 to 43.65588
- Longitude: -116.64415 to -116.47352
This location offers residents and visitors easy access to outdoor recreational activities, such as hiking and mountain biking.
Additionally, the terrain is suitable for agriculture, which is a significant part of Nampa’s economy.
Extreme Weather Events that Occur in Nampa, Idaho
Nampa, Idaho experiences various extreme weather events throughout the year. These events can range from severe thunderstorms to significant hailstorms.
Hailstorms are common in Nampa, especially during the spring and summer. Hail can range in size from small pellets to golf ball-sized chunks, causing damage to cars, roofs, and crops.
Thunderstorms often bring heavy rain and lightning.
While these storms can be brief, the intense rainfall can lead to localized flooding. Lightning also poses fire hazards, especially in the dry months.
During the summer months, Nampa can experience extreme heat.
Temperatures often rise above 100°F, increasing the risk of heatstroke and wildfires.
The winter season brings snow and icy conditions.
Although heavy snowfall is less frequent, ice storms can make roads treacherous and lead to power outages.
High winds are another factor, particularly in the spring and fall.
These winds can reach speeds of over 40 mph, causing tree damage and power line issues.
Nampa also faces smoke from wildfires in nearby areas.
This smoke can reduce air quality and visibility, posing health risks, especially to those with respiratory conditions.
Residents of Nampa should stay informed about weather risks through alerts and advisories.
For up-to-date information on weather warnings, check out local advisories.
Best Time of the Year to Visit Nampa, Idaho
Nampa, Idaho experiences diverse weather conditions throughout the year, making each season unique for visitors. Depending on one’s preferences, the best time to visit can vary, with each season offering something special.
What is Nampa, Idaho Like in Spring
Spring in Nampa starts around March and runs through May.
During these months, temperatures gradually warm up, with highs ranging from 50°F to 70°F.
This period is known for its comfortable weather, making it a great time for outdoor activities like hiking and exploring local parks.
Rain is more frequent in spring, especially in March, which sees the most rainfall with about 1.46 inches. However, April and May often bring clearer skies.
The blooming flowers and budding trees add vibrant colors to the landscape, creating picturesque scenery.
March and April have fewer crowds compared to peak summer months, so it’s a good time for those seeking a quieter visit.
Events and festivals start to pick up, offering visitors a taste of local culture without the intense heat of summer.
What is Nampa, Idaho Like in Summer
Summer in Nampa, lasting from June to August, is characterized by warm to hot weather.
Average daily highs range from 81°F to 91°F, particularly in July, which is the hottest month.
This season is ideal for enjoying outdoor water activities and exploring the natural beauty of the area.
Nampa receives ample sunshine in the summer, with over 200 sunny days per year.
Rainfall is scarce during these months, so visitors can expect mostly dry conditions.
The evenings, with lows around 59°F, can be quite pleasant for dining or strolling.
Since summer is peak tourist season, popular attractions may be busier.
However, summer events, fairs, and festivals offer lively entertainment. It’s a great time for family activities and enjoying local produce from farmers’ markets.
What is Nampa, Idaho Like in Fall
Fall in Nampa spans from September through November, with temperatures cooling down from the summer heat.
September features pleasant weather with highs around 80°F, while November sees highs drop to about 47°F.
This season showcases beautiful fall foliage, making it a picturesque time for outdoor activities.
The weather remains fairly dry, but the cooler temperatures make it comfortable for hiking and exploring.
October is particularly popular for its harvest festivals and local events that celebrate the autumn season.
What is Nampa, Idaho Like in Winter
Winter in Nampa begins in December and continues through February. This season is marked by colder temperatures, with daily highs staying below 47°F and lows dropping into the 20s.
Nampa gets around 9 inches of snow annually, which is below the US average, making it a mild winter destination. Snow lovers can enjoy light snowfall without the extreme cold.
The area experiences fewer sunny days, which adds a cozy, wintry feel.
Winter months are less crowded, providing a peaceful experience for visitors. It’s a good time for indoor activities, visiting local museums, or enjoying hot drinks at cozy cafes.
December’s holiday events add a festive charm to the town, making it a delightful time for a winter visit.