Climate and monthly weather forecast
Fort Sill, OK

Weather in January

January, the same as December, in Fort Sill, Oklahoma, is another chilly winter month, with an average temperature ranging between max 49.8°F (9.9°C) and min 23.7°F (-4.6°C). January is the coldest month, with an average high-temperature of 49.8°F (9.9°C) and an average low-temperature of 23.7°F (-4.6°C). Weather in January »

Weather in February

The last month of the winter, February, is a cool month in Fort Sill, Oklahoma, with temperature in the range of an average low of 28.8°F (-1.8°C) and an average high of 55°F (12.8°C). In Fort Sill, Oklahoma, the average high-temperature in February is essentially the same as in January - a cool 55°F (12.8°C). Weather in February »

Weather in March

March, the first month of the spring in Fort Sill, is an enjoyable month, with an average temperature varying between 37.9°F (3.3°C) and 64.4°F (18°C). In March, the average high-temperature increases from a cool 55°F (12.8°C) in February to a comfortable 64.4°F (18°C). Weather in March »

Weather in April

April in Fort Sill, Oklahoma, is a moderately hot spring month, with an average temperature varying between 74.3°F (23.5°C) and 49.5°F (9.7°C). In April, the average high-temperature increases from an enjoyable 64.4°F (18°C) in March to a warm 74.3°F (23.5°C). Weather in April »

Weather in May

The last month of the spring, May, is another warm month in Fort Sill, Oklahoma, with an average temperature fluctuating between 58.3°F (14.6°C) and 81.9°F (27.7°C). In May, the average high-temperature marginally rises from 74.3°F (23.5°C) in April to a still moderately hot 81.9°F (27.7°C). Weather in May »

Weather in June

June, the first month of the summer in Fort Sill, is a hot month, with temperature in the range of an average low of 66.7°F (19.3°C) and an average high of 90°F (32.2°C). In Fort Sill, the average high-temperature in June marginally rises from a moderately hot 81.9°F (27.7°C) in May to a hot 90°F (32.2°C). Weather in June »

Weather in July

July in Fort Sill, Oklahoma, is a sweltering summer month, with an average temperature varying between 95.7°F (35.4°C) and 71.1°F (21.7°C). July is the warmest month, with an average high-temperature of 95.7°F (35.4°C) and an average low-temperature of 71.1°F (21.7°C). Weather in July »

Weather in August

August, the last month of the summer in Fort Sill, is also a hot month, with an average temperature fluctuating between 69.6°F (20.9°C) and 94.8°F (34.9°C). In August, the average high-temperature is almost the same as in July - a hot 94.8°F (34.9°C). Weather in August »

Weather in September

The first month of the autumn, September, is also a moderately hot month in Fort Sill, Oklahoma, with an average temperature fluctuating between 85.8°F (29.9°C) and 61.9°F (16.6°C). In Fort Sill, the average high-temperature in September decreases from a tropical 94.8°F (34.9°C) in August to a warm 85.8°F (29.9°C). Weather in September »

Weather in October

October, like September, in Fort Sill, Oklahoma, is a moderately hot autumn month, with temperature in the range of an average low of 49.5°F (9.7°C) and an average high of 75.7°F (24.3°C). In October, the average high-temperature drops from a warm 85.8°F (29.9°C) in September to a still moderately hot 75.7°F (24.3°C). Weather in October »

Weather in November

The last month of the autumn, November, is another comfortable month in Fort Sill, Oklahoma, with temperature in the range of an average low of 37.9°F (3.3°C) and an average high of 63.1°F (17.3°C). In November, the average high-temperature decreases from a warm 75.7°F (24.3°C) in October to an enjoyable 63.1°F (17.3°C). Weather in November »

Weather in December

December, the first month of the winter in Fort Sill, is also a fresh month, with temperature in the range of an average high of 52.3°F (11.3°C) and an average low of 27.3°F (-2.6°C). In December, the average high-temperature decreases from a comfortable 63.1°F (17.3°C) in November to a fresh 52.3°F (11.3°C). Weather in December »
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FAQ

What is the coldest month in Fort Sill?

With an average high-temperature of 49.8°F (9.9°C) and an average low-temperature of 23.7°F (-4.6°C), January is the coldest month.

What is the driest month in Fort Sill?

January is the month with the least rainfall in Fort Sill, with 1.1" (27.9mm) of accumulated precipitation.

How much does it rain in Fort Sill?

During the entire year, Fort Sill aggregates up to 29.3" (744.2mm) of precipitation.

When is Daylight Saving Time (DST) in Fort Sill?

On Sunday, March 13. 2022, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 6. 2022, at 2:00 am, and the time zone reverts from CDT to CST.

What is the wettest month in Fort Sill?

The month with the most rainfall in Fort Sill, Oklahoma, is May, when 4.9" (124.5mm) of precipitation is typically aggregated.

When are the longest days in Fort Sill?

June has the longest days of the year in Fort Sill, Oklahoma, with an average of 14h and 26min of daylight.

What is the warmest month in Fort Sill?

With an average high-temperature of 95.7°F (35.4°C) and an average low-temperature of 71.1°F (21.7°C), July is the warmest month.

What is the month with the shortest days in Fort Sill?

December has the shortest days of the year, with an average of 9h and 53min of daylight.

Average rainfall
Fort Sill, OK

Average rainfall - Fort Sill, OK

The wettest month (with the highest rainfall) is May (4.9").
The driest month (with the least rainfall) is January (1.1").

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Average daylight
Fort Sill, OK

Average daylight - Fort Sill, OK

The month with the longest days is June (Average daylight: 14h and 26min).
The month with the shortest days is December (Average daylight: 9h and 53min).

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