Arnett, Oklahoma Weather by Month

Arnett is a small town located in Ellis County, in the northwestern part of Oklahoma, USA. Situated at the intersection of U.S. Highway 283 and State Highway 51, Arnett serves as the county seat of Ellis County. The town is characterized by its rural setting, wide-open spaces, and close-knit community, providing residents with a peaceful and welcoming environment.

Geographically, Arnett is situated in the High Plains region of Oklahoma, which is known for its flat to gently rolling terrain and semi-arid climate. The area around Arnett is primarily agricultural, with wheat, cattle, and other livestock being the main economic activities. The town covers an area of approximately 1.2 square miles, making it a small but vital part of the county.

As of the most recent census data, Arnett has a population of about 500 residents. Despite its small size, the town plays a significant role in the local community as the administrative and economic center of Ellis County. Arnett is home to several local businesses, schools, and public services that cater to the needs of its residents.

One of the notable landmarks in Arnett is the Ellis County Courthouse, a historic building that stands as a symbol of the town’s importance as the county seat. Additionally, Arnett hosts several annual events and festivals that celebrate its agricultural heritage and foster community spirit. While there are no major universities or large corporations in Arnett, the town’s charm lies in its simplicity and the strong sense of community among its residents.

Climate and Weather Overview

Arnett, Oklahoma, experiences a semi-arid climate, characterized by hot summers, cold winters, and moderate precipitation. The climate is influenced by its location in the Great Plains, which results in significant temperature variations throughout the year. The town experiences four distinct seasons, each with its own unique weather patterns.

Average Monthly Climate Data

Month Average Temperature (°F) Precipitation (inches) Sunny Days
January 37 0.7 20
February 42 0.8 20
March 50 1.4 23
April 59 2.1 25
May 67 3.4 27
June 76 3.3 28
July 81 2.4 30
August 80 2.3 29
September 72 2.1 26
October 61 1.7 24
November 50 1.0 22
December 40 0.8 20

Detailed Monthly Weather Overview


January in Arnett is characterized by cold temperatures and low precipitation. The average temperature hovers around 37°F, with nighttime lows often dipping below freezing. Precipitation averages 0.7 inches, primarily in the form of light snow or rain. There are typically about 20 sunny days, providing some relief from the winter chill.

Natural disasters in January can include severe winter storms, which may bring strong winds and occasional snowfall, leading to hazardous driving conditions and potential power outages. Residents should be prepared with adequate winter supplies and stay updated on weather advisories.

Indoor activities are highly recommended during this month. Residents and visitors can enjoy local indoor events, community gatherings, or visit the Ellis County Courthouse and other historical sites. Outdoor enthusiasts might brave the cold for activities like hiking or birdwatching in the surrounding areas.


February sees a slight increase in average temperatures, rising to around 42°F. Precipitation remains similar to January, averaging 0.8 inches, with a mix of rain and occasional snow. The number of sunny days stays relatively constant at 20.

Severe winter storms can still occur in February, necessitating caution and preparedness. However, the cold weather provides opportunities for winter sports such as ice skating and cross-country skiing.

Indoor activities remain a popular choice. Community events, indoor sports leagues, and visits to local cafés or museums can provide warmth and entertainment.


March marks the beginning of the transition to spring, with average temperatures rising to 50°F. Precipitation increases to 1.4 inches, with a mix of rain and occasional snow. There are typically 23 sunny days, offering more opportunities for outdoor activities.

As winter wanes, the risk of severe storms decreases, but heavy rainfalls can still occur early in the month. Residents can start to enjoy outdoor walks and early spring gardening.

This month is great for both indoor and outdoor activities. Local events such as craft fairs and farmers’ markets begin to emerge, providing a taste of the warmer seasons to come.


April brings a significant warming trend, with average temperatures reaching 59°F. Precipitation averages 2.1 inches, primarily as rain, as the region fully transitions into spring. The number of sunny days rises to 25.

The risk of flooding increases with the spring thaw and increased rainfall. However, April is a beautiful month for outdoor activities, including hiking, birdwatching, and exploring local parks.

Residents and visitors can participate in outdoor festivals and enjoy the blooming flowers. It’s also a great time for picnics and family outings in the parks.


In May, temperatures continue to rise, averaging around 67°F. Precipitation increases to 3.4 inches, and there are about 27 sunny days, providing ample opportunity for outdoor activities.

The weather in May is ideal for gardening, with many residents planting their spring gardens. Outdoor activities such as cycling, hiking, and fishing become popular as the weather warms.

Local events such as farmers’ markets, community fairs, and outdoor concerts start to take place, offering a variety of activities for residents and visitors to enjoy.


June marks the beginning of summer, with average temperatures reaching 76°F. Precipitation remains moderate at 3.3 inches, and the number of sunny days increases to 28.

June is generally a pleasant month, with warm temperatures and frequent sunny days. Outdoor activities such as swimming, boating, and picnicking are highly recommended.

The town hosts various summer events, including outdoor movies and music festivals. It’s also a great time to explore the local trails and parks, enjoying the full bloom of summer flora.


July is the warmest month in Arnett, Oklahoma, with average temperatures around 81°F. Precipitation averages 2.4 inches, and there are typically 30 sunny days.

The warm and humid weather is perfect for outdoor activities. Residents and visitors can enjoy swimming, fishing, and barbecues. It’s also a great time for hiking and exploring the local countryside.

Arnett celebrates Independence Day with a community fireworks display and various outdoor events. The warm evenings are perfect for outdoor dining and socializing.


In August, temperatures remain warm, averaging 80°F. Precipitation is slightly lower at 2.3 inches, and there are about 29 sunny days.

The weather remains ideal for outdoor activities. Water-based activities such as kayaking and paddleboarding are popular. The local parks and trails offer great opportunities for hiking and wildlife viewing.

August is a great month for family outings and picnics. The town often hosts summer festivals and fairs, providing entertainment for all ages.


September brings slightly cooler temperatures, averaging around 72°F. Precipitation decreases to 2.1 inches, and there are typically 26 sunny days.

The transition to autumn makes September a beautiful month for outdoor activities. The cooler temperatures are perfect for hiking, biking, and enjoying the changing foliage.

Local harvest festivals and farmers’ markets become more frequent, offering fresh produce and handmade goods. It’s also a great time for scenic drives and photography.


October sees further cooling, with average temperatures around 61°F. Precipitation averages 1.7 inches, and there are about 24 sunny days.

The fall colors reach their peak in October, making it a popular month for outdoor activities such as leaf-peeping, hiking, and hayrides. The cooler temperatures are also ideal for apple picking and visiting pumpkin patches.

Local Halloween events and fall festivals provide entertainment and community engagement. It’s a great month for outdoor photography and enjoying the crisp autumn air.


In November, temperatures drop to an average of 50°F. Precipitation averages 1.0 inch, primarily as rain, but occasional snowfalls can occur. There are typically 22 sunny days.

As winter approaches, outdoor activities shift towards preparation for the colder months. Residents can enjoy late-season hikes and prepare their homes and gardens for winter.

November is also a time for indoor activities and holiday preparations. Community events such as Thanksgiving dinners and craft fairs provide warmth and entertainment.


December brings the onset of winter, with average temperatures around 40°F. Precipitation averages 0.8 inches, mostly as snow. There are about 20 sunny days.

The holiday season brings a festive atmosphere to Arnett. Outdoor activities include ice skating, sledding, and winter walks. The town often hosts holiday events and decorations, adding to the seasonal charm.

Indoor activities such as holiday baking, crafting, and visiting local shops are popular. It’s also a time for community gatherings and enjoying the warmth of home.

Natural Disasters and Recommended Activities

While Arnett, Oklahoma, generally experiences mild weather, it is not entirely immune to natural disasters. The most common natural threats include severe thunderstorms, tornadoes, and occasional flooding during the spring and summer.

January to March

During the first three months of the year, the primary natural threats are severe winter storms, which can bring heavy snow and ice. Residents should be prepared with winter supplies and stay informed about weather conditions.

Indoor activities such as visiting the Ellis County Courthouse, attending community events, and enjoying cozy gatherings at home are recommended.

April to June

From April to June, the risk of flooding increases due to spring rains and the thawing of winter snow. Thunderstorms and tornadoes can also occur, bringing heavy rain, strong winds, and hail.

Outdoor activities such as hiking, gardening, and exploring local parks are popular. Residents should stay aware of weather advisories and be prepared for sudden changes.

July to September

During the summer months, thunderstorms are the most common natural threat, often accompanied by heavy rain and strong winds. However, these months also offer the best weather for outdoor activities.

Swimming, boating, and picnicking are highly recommended. The town hosts various summer events, providing entertainment and community engagement.

October to December

As the year comes to a close, the risk of severe weather decreases. October and November can bring occasional storms, but December typically sees the return of winter weather.

Outdoor activities such as hiking, leaf-peeping, and holiday events are popular. Residents should prepare for winter and enjoy the festive season with indoor and outdoor holiday activities.


Arnett, Oklahoma, offers a diverse and engaging climate year-round, with each season bringing its own unique charm and opportunities for activities. From the mild winters to the hot, sunny summers, residents and visitors can enjoy a wide range of outdoor and indoor activities throughout the year. By staying informed about weather conditions and being prepared for natural disasters, everyone can safely enjoy all that this picturesque town has to offer.

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