Climate and monthly weather forecastNorman, OK
Climate and monthly weather forecast
The climate of Norman
Renowned as a city with a 'Humid subtropical, no dry season' climate, Norman is classified as Cfa according to the Köppen climate classification system. Geographically positioned in the heartland of the United States, in Oklahoma, the city exhibits a range of temperatures coupled with a significant amount of annual rainfall.Over the year, temperature highs in Norman fluctuate from around 49.1°F (9.5°C) in January reaching a peak at 93.6°F (34.2°C) in July. Correspondingly, the lowest temperatures waver from 32.4°F (0.2°C) in January soaring to 72.9°F (22.7°C) in July. A clear variety in Norman's temperatures is observed, indicating a variation through distinct seasons.
Average relative humidity levels from 60% to 75% further solidify the 'Humid subtropical' classification. Rainfall trends exhibit a general year-round presence, introducing the brunt of moisture from April to September, reaching a zenith of 3.86" (98mm) in May. Concurrently, snowfall, another crucial climate characteristic, is minimal, peaking at a scant 1.3" (33mm) in February.
Strong winds whip through Norman, averaging between 8.4mph (13.5km/h) and 12mph (19.3km/h), with gusts reaching up to 18.4mph (29.6km/h). This is accompanied by good visibility of around six miles across the whole year, with sunshine hours stretching from 6 hours in December to an indulgent 11.1 hours in July.
The best time to visit Norman
Norman offers a delightful climate for tourism between April and June. Why so? This period marks the end of winter, offering pleasant temperatures ranging from 63°F (17.2°C) to 88.3°F (31.3°C). The abundant rainfall during this period keeps the surroundings fresh and vibrant - Average rainfall hovers around 2.17" (55mm) to 3.86" (98mm) during these months. Effulgence of sunshine is also at its high with 8.5 hours in April escalating to 10.9 hours per day by June paving the way for productive exploration and activities.The worst time to visit Norman
Whilst Norman boasts a charming overall climate, the months from July through August prove more challenging for tourism. These months register the height of summer heat with temperatures soaring to 93.2°F (34°C) to 93.6°F (34.2°C) range. Albeit the city experiences rainfall between 2.36" (60mm) to 2.48" (63mm), the high temperatures may have a major impact on outdoor activities, making these months slightly less comfortable for sightseeing and exploration.Spring weather in Norman
Spring arrives in Norman with gradually increasing temperatures, starting from 49.1°F (9.5°C) in March and climbing up to 77.7°F (25.4°C) in May. A notable increase in rainfall is observed during these months, with figures soaring from 1.14" (29mm) to 3.86" (98mm), marking the commencement of the city’s wettest period. The hours of daylight also increase substantially from 10.1 hours to 14 hours, paired with a considerable enhancement in sunshine hours, paving the way for the vibrant ambiance of spring.Summer weather in Norman
Norman experiences its warmest months from June to August. During this time, temperatures frequently climb to a sizzling zenith of 88.3°F (31.3°C) to 93.6°F (34.2°C). Despite this, Norman is not devoid of rainfall. Recorded figures display moderate to high precipitation during this period, between 2.17" (55mm) to 2.48" (63mm), producing a unique blend of heat and moisture.Autumn weather in Norman
The arrival of September in Norman heralds the onset of Autumn. A notable change is felt in the climate as temperatures begin to drop, moving from 84.6°F (29.2°C) in September to 71.6°F (22°C) by November. Rainfall begins to decrease, falling from a high of 2.76" (70mm) in September to 1.06" (27mm) in November. Despite the drop in temperatures, the city receives ample sunshine, ensuring daylight hours remain between 10.3 hours to 12.4 hours during these months.Winter weather in Norman
Winter in Norman stretches from December to February, bringing with it a crisp chill with temperatures hitting a low of 32.4°F (0.2°C) in January. However, the temperatures gradually increase, reaching up to 52.2°F (11.2°C) by February. Rainfall steadily drops to between 1.06" (27mm) to 1.1" (28mm), with December and February experiencing meager amounts of snowfall. Despite the lowered temperatures, Norman receives sunshine for around 6 hours per day, providing a respite from the cold weather.Weather in January
The month of January in Norman, Oklahoma often ushers in the chill of winter, with average low temperatures dipping to 32.4°F (0.2°C). The start of the year features occasional snowfall, with an average of 0.75" (19mm) of snow. Weather in January »Weather in February
In February, Norman experiences a shift in weather patterns, particularly visible in the gradual rise of temperature levels. The average high temperature moves up slightly to 52.2°F (11.2°C) from January's chill. In February, the city sees dampness with 1.06" (27mm) of rainfall spread across an average of 7.2 days. Weather in February »Weather in March
As Norman transitions into spring during March, the weather often shows dramatic changes. At this time, residents see the welcome rise in average temperature maxima to 63°F (17.2°C). March also brings a substantial amount of precipitation with 1.85" (47mm) of average rainfall, recorded over an expected ten days. Weather in March »Weather in April
The full bloom of spring can be witnessed in April in Norman. The month witnesses substantial months as the temperature maxima average at 70.9°F (21.6°C), which is quite a leap from March. The change in weather is equally noticeable in terms of rainfall, with 2.52" (64mm) recorded across about 12 days. Weather in April »Weather in May
May brings a shift from the moderate spring temperatures to the beginnings of summer heat in Norman. There is a notable jump in temperatures, with the maxima averaging around 77.7°F (25.4°C). May typically experiences the highest rainfall across the year, with an average precipitation of 3.86" (98mm). Weather in May »Weather in June
Summer officially sets in Norman during June, reflecting the classic characteristics of the season. June’s weather sees a significant increase in temperatures, with maxima soaring to an average of 88.3°F (31.3°C). The rainfall drops to 2.17" (55mm), reflecting a decrease from May's high rainfall figures. Weather in June »Weather in July
July stands out as the hottest month in Norman, embodying the peak of summer. The highest average temperature generally rises to a soaring 93.6°F (34.2°C). The average precipitation stabilizes at 2.36" (60mm), making it mildly wetter than June. Weather in July »Weather in August
August, being one of the final summer months in Norman, echoes the scorching July heat with the temperature maxima averaging at 93.2°F (34°C). With an average precipitation of 2.48" (63mm), there is a slight uptick from July, making August a bit wetter. Weather in August »Weather in September
In September, Norman begins to transition from summer towards the milder autumn. The weather shows a moderate decrease with average temperature maxima dropping to 84.6°F (29.2°C). Rainfall peaks again with an average of 2.76" (70mm) across the month. Weather in September »Weather in October
The month of October in Norman brings noticeably cooler weather along with the vibrant fall colors. As compared to September, the average temperature tops dip significantly to around 71.6°F (22°C). Rainfall reduces from September, averaging at 2.44" (62mm) spanning over approximately ten days. Weather in October »Weather in November
November typically marks the prelude of winter in Norman. The cool autumn weather takes a decisively cold turn, with the lowest average temperature falling to 42.8°F (6°C). November is relatively drier with an average rainfall of 1.06" (27mm). Weather in November »Weather in December
December, the final month of the year, sets in the full winter season in Norman. The temperature hits annual lows with averages hovering around 49.5°F (9.7°C). December witnesses a mild increase in snowfall, with an average deposit of 0.79" (20mm). Weather in December »Updated: Jun 6, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Norman, January is known for its average lowest temperatures, reaching a high of 49.1°F (9.5°C) and a low of 32.4°F (0.2°C).
In Norman, during the entire year, the rain falls for 121.1 days and collects up to 24.8" (630mm) of precipitation.
Months with snowfall are January through March, November and December.
In Norman, during the entire year, snow falls for 6.9 days and aggregates up to 3.19" (81mm) of snow.
The months with the least rainfall are February and November Rain falls for 7.2 days and accumulates 1.06" (27mm) of rain.
February is the month with the most snowfall. Snow falls for 2.2 days and accumulates 1.3" (33mm) of snow.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
April through October are months without snowfall.
May is the most humid month, with an average relative humidity of 75%.
May is the month with the most rainfall. Rain falls for 15.3 days and accumulates 3.86" (98mm) of precipitation.
The month with the longest days is June, with an average of 14h and 30min of daylight.
June through August, with an average maximum UV index of 7, are months with the highest UV index.
Norman notes the warmest temperatures in July, with a average high of 93.6°F (34.2°C) and a low of 72.9°F (22.7°C).
July has the most sunshine of the year, with an average of 11.1h of sunshine.
With an average relative humidity of 60%, August is the least humid month.
With an average of 9h and 48min of daylight, December has the shortest days of the year.
The month with the least sunshine is December, with an average of 6h of sunshine.
December is the month with the lowest UV index, with an average maximum UV index of 2.
Average temperature
Norman, OK
The warmest month (with the highest average high temperature) is July (93.6°F).
The month with the lowest average high temperature is January (49.1°F).
The month with the highest average low temperature is July (72.9°F).
The coldest month (with the lowest average low temperature) is January (32.4°F).
Average pressure
Norman, OK
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.1"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.9"Hg - Average pressure in May:
29.9"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Norman, OK
- Average wind speed in January:
10.8mph - Average wind speed in February:
11.3mph - Average wind speed in March:
11.7mph - Average wind speed in April:
12mph - Average wind speed in May:
10.4mph - Average wind speed in June:
9.8mph
- Average wind speed in July:
8.4mph - Average wind speed in August:
8.3mph - Average wind speed in September:
8.5mph - Average wind speed in October:
10.1mph - Average wind speed in November:
10.9mph - Average wind speed in December:
10.2mph
The windiest month (with the highest average wind speed) is April (12mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity
Norman, OK
The month with the highest relative humidity is May (75%).
The month with the lowest relative humidity is August (60%).
Average rainfall
Norman, OK
- Average rainfall in January:
1.14" - Average rainfall in February:
1.06" - Average rainfall in March:
1.85" - Average rainfall in April:
2.52" - Average rainfall in May:
3.86" - Average rainfall in June:
2.17"
- Average rainfall in July:
2.36" - Average rainfall in August:
2.48" - Average rainfall in September:
2.76" - Average rainfall in October:
2.44" - Average rainfall in November:
1.06" - Average rainfall in December:
1.1"
The wettest month (with the highest rainfall) is May (3.86").
The driest months (with the least rainfall) are February and November (1.06").
Average rainfall days
Norman, OK
- Average rainfall days in January:
4.8 days - Average rainfall days in February:
7.2 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
12.3 days - Average rainfall days in May:
15.3 days - Average rainfall days in June:
10.8 days
- Average rainfall days in July:
11.8 days - Average rainfall days in August:
11.9 days - Average rainfall days in September:
13.5 days - Average rainfall days in October:
10 days - Average rainfall days in November:
7 days - Average rainfall days in December:
5.7 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is January (4.8 days).
Average snowfall
Norman, OK
The month with the highest snowfall is February (1.3").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Norman, OK
- Average snowfall days in January:
1.9 days - Average snowfall days in February:
2.2 days - Average snowfall days in March:
0.6 days - Average snowfall days in April:
0.1 days - Average snowfall days in May:
0 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
0 days - Average snowfall days in November:
0.6 days - Average snowfall days in December:
1.5 days
The month with the highest number of snowfall days is February (2.2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Norman, OK
- Average daylight in January:
10h and 6min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 30min
- Average daylight in July:
14h and 18min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 18min - Average daylight in December:
9h and 48min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
6h and 12min - Average sunshine in February:
7h and 18min - Average sunshine in March:
7h and 24min - Average sunshine in April:
8h and 30min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 54min
- Average sunshine in July:
11h and 6min - Average sunshine in August:
11h and 0min - Average sunshine in September:
8h and 36min - Average sunshine in October:
7h and 0min - Average sunshine in November:
6h and 12min - Average sunshine in December:
6h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 6h and 0min).
Average sunshine days
Norman, OK
- Average sunshine days in January:
24.2 days - Average sunshine days in February:
17.9 days - Average sunshine days in March:
17 days - Average sunshine days in April:
15.5 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
17 days
- Average sunshine days in July:
16.8 days - Average sunshine days in August:
15.7 days - Average sunshine days in September:
14 days - Average sunshine days in October:
19.9 days - Average sunshine days in November:
21.5 days - Average sunshine days in December:
23.3 days
The month with the most sunshine days is January (24.2 days).
The month with the least sunshine days is May (13.8 days).
Average UV index
Norman, OK
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover
Norman, OK
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility
Norman, OK
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
