Climate Insights for Bagnell Seaplane Base

Washington County, Missouri, United States

Hottest
July
31°C peak
Coldest
January
-3°C low
Wettest
May
150mm rain
Best to Visit
June, August, September
Mild temps & low rain

Climate Overview

The climate in Bagnell Seaplane Base is temperate. The average annual temperature is 14°C and approximately 1073mm of precipitation falls per year. Bagnell Seaplane Base receives a notable amount of rainfall throughout the year, including during its driest month. Bagnell Seaplane Base is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, June, August. The coldest months are January, February, December, when temperatures can drop to -3°C. Light snow can occur between January and December.

Temperature

-10° 10° 20° 30° 40° Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Max: 6° Average: 1° Min: -3° Feb Max: 9° Average: 3° Min: -1° Mar Max: 15° Average: 9° Min: 4° Apr Max: 20° Average: 14° Min: 9° May Max: 24° Average: 19° Min: 15° Jun Max: 30° Average: 25° Min: 20° Jul Max: 31° Average: 26° Min: 22° Aug Max: 30° Average: 25° Min: 20° Sep Max: 28° Average: 22° Min: 17° Oct Max: 21° Average: 15° Min: 10° Nov Max: 14° Average: 9° Min: 4° Dec Max: 9° Average: 4° Min: 1°
Max
Average
Min

Temperatures in Bagnell Seaplane Base vary considerably across the year, with a 34°C difference between the coldest and warmest months. The warmest month is July, when average highs reach 31°C and the mean temperature sits around 26°C. The coldest month is January, when overnight lows fall to -3°C and the daily average is 1°C. On average, daily temperatures fluctuate by about 10°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 7°C shift in average temperatures.

Precipitation

0mm 25mm 50mm 75mm 100mm 125mm 150mm Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Precipitation: 60mm Snow: 10mm Feb Precipitation: 58mm Snow: 10mm Mar Precipitation: 104mm Snow: 2mm Apr Precipitation: 113mm Snow: 1mm May Precipitation: 150mm Snow: 0mm Jun Precipitation: 100mm Snow: 0mm Jul Precipitation: 114mm Snow: 0mm Aug Precipitation: 92mm Snow: 0mm Sep Precipitation: 59mm Snow: 0mm Oct Precipitation: 86mm Snow: 0mm Nov Precipitation: 74mm Snow: 2mm Dec Precipitation: 64mm Snow: 2mm
Precipitation
Snow

Bagnell Seaplane Base is a moderately rainy area, receiving approximately 1073mm of precipitation annually, which averages out to around 89mm per month. The wettest month is May, averaging 150mm of rainfall. July and April also tend to see above-average precipitation. The driest month is February, with just 58mm. That's 92mm less than May, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall. Light snowfall can occur between January and December, totalling around 28cm annually. January is the snowiest month with approximately 10cm.

Wind

0km/h 5km/h 10km/h 15km/h 20km/h Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Jan Wind Speed: 16km/h Feb Wind Speed: 17km/h Mar Wind Speed: 18km/h Apr Wind Speed: 18km/h May Wind Speed: 16km/h Jun Wind Speed: 14km/h Jul Wind Speed: 13km/h Aug Wind Speed: 13km/h Sep Wind Speed: 13km/h Oct Wind Speed: 16km/h Nov Wind Speed: 16km/h Dec Wind Speed: 17km/h
Wind Speed

Bagnell Seaplane Base is mildly breezy, with an average annual wind speed of 16km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 18km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 13km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 17km/h in winter, 17km/h in spring, 13km/h in summer, 15km/h in autumn.

Seasons

Winter
Dec 21
Spring
Mar 20
Summer
Jun 21
Autumn
Sep 23

88 days until Summer

It is currently spring in Bagnell Seaplane Base, which began on March 20, 2026. Bagnell Seaplane Base is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 31°C, while the coldest stretch bottoms out in January near -3°C. Summer is next, beginning on June 21, 2026 — 88 days from now.

Spring

Temperatures range from 4 to 24°C. Rainfall is heavy, totalling around 367mm across the season with a monthly average of 122mm. Winds are moderate at around 17km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.

Summer

Temperatures range from 20 to 31°C. Rainfall is heavy, totalling around 305mm across the season with a monthly average of 102mm. Winds are generally light, averaging 13km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.

Autumn

Temperatures range from 4 to 28°C. Precipitation is moderate at around 219mm for the season, averaging 73mm per month. Winds are moderate at around 15km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.

Winter

Temperatures range from -3 to 9°C. Precipitation is moderate at around 181mm for the season, averaging 60mm per month. Expect around 22cm of snow accumulation during this period. Winds are moderate at around 17km/h. Warm winter clothing and waterproof boots are a must, and travel may be affected by snow.

Best Time to Visit

Jan
Feb
Mar
Apr 14°
May 19°
Jun 25°
Jul 26°
Aug 25°
Sep 22°
Oct 15°
Nov
Dec

The best time to visit Bagnell Seaplane Base is during June, August, September and October, when the weather is most comfortable for travellers. During these months, average temperatures hover around 22°C with modest rainfall averaging 84mm per month. By contrast, July can be uncomfortably hot with highs reaching 31°C, while January is the coldest period with lows dropping to -3°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

Monthly Climate Data

The table below shows monthly climate averages for Bagnell Seaplane Base based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.

Month
Min Temperature
Max Temperature
Wind Speed
Precipitation
Snow
Jan
-3 °C
6 °C
16 km/h
60 mm
10 cm
Feb
-1 °C
9 °C
17 km/h
58 mm
10 cm
Mar Current
4 °C
15 °C
18 km/h
104 mm
2 cm
Apr
9 °C
20 °C
18 km/h
113 mm
1 cm
May
15 °C
24 °C
16 km/h
150 mm
0 cm
Jun
20 °C
30 °C
14 km/h
100 mm
0 cm
Jul
22 °C
31 °C
13 km/h
114 mm
0 cm
Aug
20 °C
30 °C
13 km/h
92 mm
0 cm
Sep
17 °C
28 °C
13 km/h
59 mm
0 cm
Oct
10 °C
21 °C
16 km/h
86 mm
0 cm
Nov
4 °C
14 °C
16 km/h
74 mm
2 cm
Dec
1 °C
9 °C
17 km/h
64 mm
2 cm
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Metric (°C, km/h)