Climate and monthly weather forecastGrand Lake, CO
Grand Lake, Colorado, USA - Climate and weather forecast by month. Detailed climate information with charts - average monthly weather with temperature, pressure, humidity, precipitation, wind, daylight, sunshine, visibility, and UV index data. In Grand Lake, during the entire year, the rain falls for 82.5 days and collects up to 8.19" (208mm) of precipitation. The months with the least rainfall are September, November and December Rain falls for 6.4 days and accumulates 0.39" (10mm) of rain.
Climate and monthly weather forecast
Weather in January
January, the same as December, in Grand Lake, Colorado, is another subzero cold winter month, with an average temperature varying between 2.5°F (-16.4°C) and 23.7°F (-4.6°C). Entering January, Grand Lake's average high-temperature reads a still freezing cold 23.7°F (-4.6°C), indicating a close resemblance to the previous month's climate. Weather in January »Weather in February
The last month of the winter, February, is also a subzero cold month in Grand Lake, Colorado, with temperature in the range of an average high of 24.3°F (-4.3°C) and an average low of 5°F (-15°C). Grand Lake experiences an average high-temperature of a still subzero cold 24.3°F (-4.3°C) in February, subtly different from January's 23.7°F (-4.6°C). Weather in February »Weather in March
The first month of the spring, March, is an icy month in Grand Lake, Colorado, with an average temperature ranging between min 12.4°F (-10.9°C) and max 32.7°F (0.4°C). As March begins, there's a slight increase in the average high-temperature, moving from a freezing cold 24.3°F (-4.3°C) in February to an icy 32.7°F (0.4°C). Weather in March »Weather in April
April, the same as March, is a wintry spring month in Grand Lake, Colorado, with an average temperature varying between 38.8°F (3.8°C) and 18.3°F (-7.6°C). A gentle upsurge in temperatures occurs as March gives way to April, with average highs shifting from a cold 32.7°F (0.4°C) to a still icy 38.8°F (3.8°C). Weather in April »Weather in May
The last month of the spring, May, is a fresh month in Grand Lake, Colorado, with an average temperature ranging between min 27.5°F (-2.5°C) and max 51.4°F (10.8°C). As April transitions into May, Grand Lake sees a rise in the average high-temperature, moving from a wintry 38.8°F (3.8°C) to a cool 51.4°F (10.8°C). Weather in May »Weather in June
June, the first month of the summer in Grand Lake, is an enjoyable month, with an average temperature varying between 66.9°F (19.4°C) and 37.6°F (3.1°C). The shift into June brings a noticeable increase in the average high-temperature, soaring from a fresh 51.4°F (10.8°C) in May to a refreshing 66.9°F (19.4°C). Weather in June »Weather in July
July is a pleasant summer month in Grand Lake, Colorado, with an average temperature varying between 72.1°F (22.3°C) and 42.6°F (5.9°C). July stands out as Grand Lake's warmest month, with an average high-temperature of 72.1°F (22.3°C) and a low-temperature of 42.6°F (5.9°C). Weather in July »Weather in August
The last month of the summer, August, is another pleasant month in Grand Lake, Colorado, with an average temperature fluctuating between 40.8°F (4.9°C) and 70.7°F (21.5°C). Welcoming August, Grand Lake notes an average high-temperature of a still pleasant 70.7°F (21.5°C), nearly consistent with July's 72.1°F (22.3°C). Weather in August »Weather in September
The first month of the autumn, September, is also an enjoyable month in Grand Lake, Colorado, with an average temperature fluctuating between 63.7°F (17.6°C) and 36°F (2.2°C). The onset of September brings a small shift in high-temperatures, falling from a pleasant 70.7°F (21.5°C) in August to a comfortable 63.7°F (17.6°C). Weather in September »Weather in October
October, the same as September, in Grand Lake, Colorado, is another chilly autumn month, with an average temperature ranging between min 24.3°F (-4.3°C) and max 46.8°F (8.2°C). In October, the meteorological conditions markedly change with the average high-temperature descending from an enjoyable 63.7°F (17.6°C) in September to a chilly 46.8°F (8.2°C). Weather in October »Weather in November
The last month of the autumn, November, is also an icy month in Grand Lake, Colorado, with an average temperature fluctuating between 13.8°F (-10.1°C) and 34°F (1.1°C). In November, the average high-temperature decreases from a chilly 46.8°F (8.2°C) in October to a wintry 34°F (1.1°C). Weather in November »Weather in December
December, the first month of the winter in Grand Lake, is also a subzero cold month, with an average temperature ranging between min 3.6°F (-15.8°C) and max 23.4°F (-4.8°C). Grand Lake witnesses the coldest weather in December, with temperatures averaging a high of 23.4°F (-4.8°C) and a low of 3.6°F (-15.8°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Grand Lake, CO
The warmest month (with the highest average high temperature) is July (72.1°F).
The month with the lowest average high temperature is December (23.4°F).
The month with the highest average low temperature is July (42.6°F).
The coldest month (with the lowest average low temperature) is January (2.5°F).
Average pressure
Grand Lake, CO
- Average pressure in January:
30.2"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
30.03"Hg - Average pressure in August:
30.03"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.16"Hg
The month with the highest atmospheric pressure is January (30.2"Hg).
The months with the lowest atmospheric pressure are April, May and June (29.93"Hg).
Average wind speed
Grand Lake, CO
- Average wind speed in January:
6.3mph - Average wind speed in February:
6.9mph - Average wind speed in March:
6.6mph - Average wind speed in April:
6.8mph - Average wind speed in May:
6.5mph - Average wind speed in June:
7mph
- Average wind speed in July:
5.4mph - Average wind speed in August:
5.4mph - Average wind speed in September:
5.8mph - Average wind speed in October:
6.2mph - Average wind speed in November:
6.3mph - Average wind speed in December:
5.9mph
The windiest month (with the highest average wind speed) is June (7mph).
The calmest months (with the lowest average wind speed) are July and August (5.4mph).
Average humidity
Grand Lake, CO
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is June (49%).
Average rainfall
Grand Lake, CO
- Average rainfall in January:
0.51" - Average rainfall in February:
0.75" - Average rainfall in March:
0.75" - Average rainfall in April:
1.02" - Average rainfall in May:
0.94" - Average rainfall in June:
0.94"
- Average rainfall in July:
1.06" - Average rainfall in August:
0.55" - Average rainfall in September:
0.39" - Average rainfall in October:
0.47" - Average rainfall in November:
0.39" - Average rainfall in December:
0.39"
The wettest month (with the highest rainfall) is July (1.06").
The driest months (with the least rainfall) are September, November and December (0.39").
Average rainfall days
Grand Lake, CO
- Average rainfall days in January:
5.3 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
6.8 days - Average rainfall days in April:
7.3 days - Average rainfall days in May:
8.8 days - Average rainfall days in June:
8.3 days
- Average rainfall days in July:
13.5 days - Average rainfall days in August:
9.2 days - Average rainfall days in September:
6.4 days - Average rainfall days in October:
3.5 days - Average rainfall days in November:
3.3 days - Average rainfall days in December:
4.8 days
The month with the highest number of rainy days is July (13.5 days).
The month with the least rainy days is November (3.3 days).
Average snowfall
Grand Lake, CO
- Average snowfall in January:
4.02" - Average snowfall in February:
6.14" - Average snowfall in March:
6.02" - Average snowfall in April:
6.81" - Average snowfall in May:
4.41" - Average snowfall in June:
1.93"
The month with the highest snowfall is April (6.81").
The months with the least snowfall are July and August (0").
Average snowfall days
Grand Lake, CO
- Average snowfall days in January:
12 days - Average snowfall days in February:
13.8 days - Average snowfall days in March:
12.4 days - Average snowfall days in April:
11.8 days - Average snowfall days in May:
9.2 days - Average snowfall days in June:
2.5 days
- Average snowfall days in July:
0.1 days - Average snowfall days in August:
0.1 days - Average snowfall days in September:
1.4 days - Average snowfall days in October:
7.3 days - Average snowfall days in November:
8.2 days - Average snowfall days in December:
12 days
The month with the highest number of snowfall days is February (13.8 days).
The months with the least snowfall days are July and August (0.1 days).
Average daylight / Average sunshine
Grand Lake, CO
- Average daylight in January:
9h and 42min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
15h and 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in January:
5h and 48min - Average sunshine in February:
5h and 36min - Average sunshine in March:
7h and 54min - Average sunshine in April:
9h and 30min - Average sunshine in May:
10h and 48min - Average sunshine in June:
11h and 42min
- Average sunshine in July:
11h and 36min - Average sunshine in August:
11h and 48min - Average sunshine in September:
11h and 6min - Average sunshine in October:
7h and 6min - Average sunshine in November:
6h and 54min - Average sunshine in December:
5h and 54min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 5h and 36min).
Average sunshine days
Grand Lake, CO
- Average sunshine days in January:
19 days - Average sunshine days in February:
14 days - Average sunshine days in March:
15.9 days - Average sunshine days in April:
14.7 days - Average sunshine days in May:
14.6 days - Average sunshine days in June:
15.7 days
- Average sunshine days in July:
13.1 days - Average sunshine days in August:
17 days - Average sunshine days in September:
19.8 days - Average sunshine days in October:
21 days - Average sunshine days in November:
21.4 days - Average sunshine days in December:
18.8 days
The month with the most sunshine days is November (21.4 days).
The month with the least sunshine days is July (13.1 days).
Average UV index
Grand Lake, CO
The months with the highest UV index are June, July and August (UV index 4).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Grand Lake, CO
The month with the most cloud cover is February (Cloud cover 47).
The month with the least cloud cover is September (Cloud cover 15).
Average visibility
Grand Lake, CO
The months with the highest visibility are May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
