Climate and monthly weather forecastBrentwood, MO
Climate and monthly weather forecast
Weather in January
January, like December, in Brentwood, Missouri, is a wintry winter month, with temperature in the range of an average high of 37.8°F (3.2°C) and an average low of 24.3°F (-4.3°C). January, recording an average high temperature of 37.8°F (3.2°C) and a low temperature of 24.3°F (-4.3°C), is Brentwood's coldest month. Weather in January »Weather in February
February, the last month of the winter in Brentwood, is also a wintry month, with an average temperature varying between 42.3°F (5.7°C) and 27.9°F (-2.3°C). Brentwood's shift from January to February is accompanied by an average high-temperature of a still icy 42.3°F (5.7°C), a slight deviation from 37.8°F (3.2°C). Weather in February »Weather in March
March, the first month of the spring in Brentwood, is a fresh month, with an average temperature ranging between min 38.1°F (3.4°C) and max 54.3°F (12.4°C). March's onset witnesses a shift in the average high-temperature, moving from an icy 42.3°F (5.7°C) in February to a fresh 54.3°F (12.4°C). Weather in March »Weather in April
April is a comfortable spring month in Brentwood, Missouri, with temperature in the range of an average high of 65.5°F (18.6°C) and an average low of 48°F (8.9°C). April brings an increase in the average high-temperature, progressing from a fresh 54.3°F (12.4°C) in March to an enjoyable 65.5°F (18.6°C). Weather in April »Weather in May
May, the last month of the spring in Brentwood, is a moderately hot month, with an average temperature varying between 57.7°F (14.3°C) and 74.8°F (23.8°C). As April transitions into May, Brentwood sees a rise in the average high-temperature, moving from a refreshing 65.5°F (18.6°C) to a warm 74.8°F (23.8°C). Weather in May »Weather in June
June, the first month of the summer in Brentwood, is still a warm month, with an average temperature varying between 84.2°F (29°C) and 67.1°F (19.5°C). As May transitions into June, a change in temperatures is observed, with average highs moving from a moderately hot 74.8°F (23.8°C) to a still warm 84.2°F (29°C). Weather in June »Weather in July
July in Brentwood, Missouri, is a hot summer month, with an average temperature ranging between max 86.9°F (30.5°C) and min 69.1°F (20.6°C). July, noted for its average high-temperature of 86.9°F (30.5°C) and an average low-temperature of 69.1°F (20.6°C), is considered the warmest month. July's average heat index is computed to be a fiery hot 100.4°F (38°C). Weather in July »Weather in August
August, the last month of the summer in Brentwood, is another warm month, with an average temperature fluctuating between 85.5°F (29.7°C) and 67.1°F (19.5°C). Brentwood's weather in August indicates an average high-temperature of a warm 85.5°F (29.7°C), nearly consistent with the 86.9°F (30.5°C) of July. Weather in August »Weather in September
September, the first month of the autumn in Brentwood, is still a warm month, with an average temperature fluctuating between 79.7°F (26.5°C) and 60.1°F (15.6°C). A subtle shift in Brentwood's weather is observed as August turns into September, with the average high temperature reducing from 85.5°F (29.7°C) to a still warm 79.7°F (26.5°C). Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Brentwood, Missouri, with temperature in the range of an average low of 49.5°F (9.7°C) and an average high of 66.4°F (19.1°C). With the onset of October, Brentwood experiences a modest temperature adjustment, with the average high-temperature receding from a warm 79.7°F (26.5°C) in September to a refreshing 66.4°F (19.1°C). Weather in October »Weather in November
November, the last month of the autumn in Brentwood, is another cool month, with an average temperature fluctuating between 53.4°F (11.9°C) and 38.1°F (3.4°C). Brentwood's November weather shows a moderate shift in high-temperatures, falling from October's comfortable 66.4°F (19.1°C) to a fresh 53.4°F (11.9°C). Weather in November »Weather in December
December, the first month of the winter in Brentwood, is also a wintry month, with temperature in the range of an average high of 42.6°F (5.9°C) and an average low of 30.6°F (-0.8°C). The transition into December is accompanied by a temperature decrease, with the average high-temperature shifting from a fresh 53.4°F (11.9°C) in November to a cold 42.6°F (5.9°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Brentwood, MO
The warmest month (with the highest average high temperature) is July (86.9°F).
The month with the lowest average high temperature is January (37.8°F).
The month with the highest average low temperature is July (69.1°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure
Brentwood, MO
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.98"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.12"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 (29.92"Hg).
Average wind speed
Brentwood, MO
- Average wind speed in January:
9.2mph - Average wind speed in February:
9.1mph - Average wind speed in March:
8.9mph - Average wind speed in April:
8.9mph - Average wind speed in May:
7.2mph - Average wind speed in June:
6.4mph
- Average wind speed in July:
5.5mph - Average wind speed in August:
5.5mph - Average wind speed in September:
6mph - Average wind speed in October:
7.8mph - Average wind speed in November:
8.4mph - Average wind speed in December:
8.6mph
The windiest month (with the highest average wind speed) is January (9.2mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity
Brentwood, MO
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (70%).
Average rainfall
Brentwood, MO
- Average rainfall in January:
1.73" - Average rainfall in February:
1.69" - Average rainfall in March:
2.36" - Average rainfall in April:
3.31" - Average rainfall in May:
3.58" - Average rainfall in June:
3.5"
- Average rainfall in July:
3.19" - Average rainfall in August:
3.31" - Average rainfall in September:
1.97" - Average rainfall in October:
2.17" - Average rainfall in November:
1.73" - Average rainfall in December:
2.05"
The wettest month (with the highest rainfall) is May (3.58").
The driest month (with the least rainfall) is February (1.69").
Average rainfall days
Brentwood, MO
- Average rainfall days in January:
6.5 days - Average rainfall days in February:
7.6 days - Average rainfall days in March:
14.1 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
16.9 days - Average rainfall days in June:
15.8 days
- Average rainfall days in July:
16.7 days - Average rainfall days in August:
14.2 days - Average rainfall days in September:
12 days - Average rainfall days in October:
10.1 days - Average rainfall days in November:
8.6 days - Average rainfall days in December:
7.5 days
The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (6.5 days).
Average snowfall
Brentwood, MO
The month with the highest snowfall is February (2.6").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Brentwood, MO
- Average snowfall days in January:
4.7 days - Average snowfall days in February:
5.2 days - Average snowfall days in March:
1.9 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:
0.1 days - Average snowfall days in October:
0.1 days - Average snowfall days in November:
1 days - Average snowfall days in December:
3.1 days
The month with the highest number of snowfall days is February (5.2 days).
The months with the least snowfall days are May, June, July and August (0 days).
Average daylight / Average sunshine
Brentwood, MO
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 48min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 18min - Average daylight in June:
14h and 48min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 36min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 6min - Average daylight in December:
9h and 30min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in January:
4h and 36min - Average sunshine in February:
4h and 42min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 36min - Average sunshine in May:
9h and 30min - Average sunshine in June:
10h and 30min
- Average sunshine in July:
10h and 30min - Average sunshine in August:
10h and 18min - Average sunshine in September:
9h and 36min - Average sunshine in October:
6h and 12min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 54min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 36min).
Average sunshine days
Brentwood, MO
- Average sunshine days in January:
21 days - Average sunshine days in February:
16.4 days - Average sunshine days in March:
15.2 days - Average sunshine days in April:
14.2 days - Average sunshine days in May:
11.5 days - Average sunshine days in June:
11.2 days
- Average sunshine days in July:
11.5 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
15.2 days - Average sunshine days in October:
20 days - Average sunshine days in November:
19.5 days - Average sunshine days in December:
19.9 days
The month with the most sunshine days is January (21 days).
The month with the least sunshine days is June (11.2 days).
Average UV index
Brentwood, MO
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January, February and December (UV index 2).
Average cloud cover
Brentwood, MO
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility
Brentwood, MO
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).





