Arkansas has an average annual temperature of
59.7°F
(across all 11 cities) with approximately
1240 mm of annual precipitation
and average humidity of 76%.
The warmest city is Benton
with average July highs of 104.5°F,
while Bentonville
is the coldest with average January lows of 7.7°F.
This page covers 45 years of NASA POWER climate data (1981–2025)
including temperature, rainfall, humidity, wind speed, and solar radiation.
Aug is typically the warmest month across Arkansas with average highs around
102°F, while
Jan is the coldest with average lows near
12.7°F.
May is the wettest month with approximately
146 mm of rainfall on average.
Month
Max Temp
Min Temp
Avg Temp
Rain (mm)
Humidity
Wind (m/s)
Solar (kWh/m²)
Jan
64.8°F
12.7°F
38.8°F
81
83%
1.4
2.50
Feb
69.1°F
15.8°F
42.4°F
87
82%
1.4
3.10
Mar
76.1°F
22.8°F
49.5°F
115
80%
1.4
4.20
Apr
81.5°F
31.8°F
56.7°F
132
78%
1.3
5.20
May
87.4°F
43.9°F
65.7°F
146
79%
1.1
5.70
Jun
95.4°F
56.1°F
75.7°F
105
75%
1.0
6.40
Jul
101.8°F
62.8°F
82.4°F
90
68%
0.9
6.40
Aug
102°F
60.4°F
81.3°F
87
65%
0.9
5.80
Sep
96.8°F
47.7°F
72.3°F
93
66%
1.0
4.90
Oct
87.6°F
34°F
60.8°F
112
70%
1.1
3.80
Nov
75.7°F
23.5°F
49.6°F
108
78%
1.2
2.70
Dec
67.3°F
15.6°F
41.5°F
102
83%
1.2
2.20
📈 Arkansas Yearly Climate Trends
🌡️ Annual Temperature Trend
State-wide avg annual high & low · Last 10 years
📈 Arkansas Long-Term Climate Trends (1981–2025)
This chart shows how Arkansas's average temperatures have shifted across 45 years.
Use the range buttons to focus on recent decades or view the full historical record.
Data is averaged across all 11 cities in the state.
🌧️ Annual Precipitation Trend
State-wide avg annual precipitation · Last 10 years · mm/year
🔗 Explore Cities in Arkansas
Browse detailed weather history, monthly averages, and 45-year climate trends for every city in Arkansas.
Aug is the warmest month across Arkansas, with state-wide average highs of 102°F and average lows of 60.4°F.
How many cities in Arkansas have weather data?▼
TownPillar has historical weather data for 11 cities in Arkansas, covering 45 years of NASA POWER climate records from 1981 to 2025.
Which month has the most sunshine in Arkansas?▼
Jul is the sunniest month across Arkansas with an average solar radiation of 6.40 kWh/m²/day state-wide. This solar radiation data from NASA POWER is useful for solar energy planning, agriculture, and understanding seasonal sunshine availability.
Where does this climate data come from?▼
All data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite reanalysis data. It includes monthly temperature, precipitation, humidity, wind speed, and solar radiation at 0.5° × 0.625° spatial resolution.
📚 Data Source
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources). Data covers 45 years (1981–2025) across 11 cities in Arkansas at monthly temporal resolution.