Norman (OK) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Norman.
Climate overview of Norman
The climate in Norman, Oklahoma, United States of America, is marked by large temperature swings across the seasons, ranging from 34°C (93°F) in August to 11°C (52°F) in January.
Annual rain/snowfall is moderate at around 966 mm (38 in), with May being the wettest month. The city also has a distinct dry season from January to February, with very warm summers and cold winters. The most sunshine falls in August, with an average of 11.3 hours of daily sunshine.
Norman Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Norman - and find the best time to visit.
Monthly Temperature in Norman
In Norman, temperatures differ significantly between summer and winter months. Average daytime temperatures reach a very warm 34°C (93°F) in August. In January, the coolest month of the year, temperatures drop to a chilly 11°C (52°F).
At night, temperatures range from around 22°C (72°F) in August to -3°C (27°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Norman
On average, Norman receives a reasonable amount of rain/snowfall, with an annual precipitation of 966 mm (38 in). Norman can be quite wet during May, receiving approximately 165 mm (6.5 in) of precipitation over 11 rainy days.
In contrast, during the driest month (January), you will experience much drier conditions, with 23 mm (0.9 in) of precipitation spread across 4 rainy days. For more details, please visit our Norman Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Norman
Norman can be enjoyed more throughout the sunniest month of August under a blue sky, with approximately 11.3 hours of sunshine daily. In contrast, the city experiences much darker days in January, with only 5.4 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Humidity in Norman by Month
The relative humidity is moderate throughout the year in Norman.
The city experiences its highest humidity in January, reaching 62%. In August, the humidity drops to its lowest level at 48%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Wind Speed in Norman
The mean wind speed over the year ranges from 5 m/s (10 knots) in July, August and September to 7 m/s (14 knots) in March and April. What does this mean?
The mean monthly wind speed over the year (meters per second)
Best Time to Visit Norman
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: October
- Warmest weather: July and August
- Most sunshine: June, July and August
- Fewest rainy days: January, February, November and December
- Wettest months: April, May, June, July and August, when rainfall is highest.
- Seasonal pattern: A distinct dry season from January to February, with very warm summers and cold winters
- Coldest conditions: January, with freezing nights around -3°C (27°F).
Frequently asked questions about the climate in Norman
What is the best time to visit Norman?
October typically offers the most optimal weather in Norman. In contrast, July and August tend to have less optimal conditions. Norman has a distinct dry season from January to February, with very warm summers and cold winters.
What temperatures can I expect in Norman?
Daytime highs range from 11°C (52°F) in January to 34°C (93°F) in August. Nighttime lows range from -3°C (27°F) to 22°C (72°F). Temperatures vary considerably through the year.
How much rain does Norman get?
Annual rainfall is around 966 mm (38 in). May is the wettest month with 165 mm (6.5 in), while January is the driest with 23 mm (0.9 in).
How sunny is Norman?
Norman receives around 3,026 hours of sunshine per year. August is the sunniest month with 338 hours, while January is the cloudiest with just 163 hours. Overall, Norman enjoys abundant sunshine.
Norman 3-Day Forecast
Norman (OK) 3-Day Forecast
Norman on the map
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