Climate and monthly weather forecastMerlin, OR
Climate and monthly weather forecast
Weather in January
January, the same as December, in Merlin, Oregon, is a frosty winter month, with temperature in the range of an average low of 32.5°F (0.3°C) and an average high of 47.8°F (8.8°C). Stepping into January, Merlin records an average high-temperature of a still frosty 47.8°F (8.8°C), almost consistent with December. Weather in January »Weather in February
February, the last month of the winter in Merlin, is also a frosty month, with temperature in the range of an average high of 49.3°F (9.6°C) and an average low of 32.5°F (0.3°C). The advent of February brings an average high-temperature of a still frosty 49.3°F (9.6°C), almost identical to the preceding month. Weather in February »Weather in March
March, the first month of the spring in Merlin, is a fresh month, with an average temperature fluctuating between 33.3°F (0.7°C) and 52.5°F (11.4°C). Merlin's shift into March is marked by a subtle change to a cool 52.5°F (11.4°C) from February's 49.3°F (9.6°C) in temperature. Weather in March »Weather in April
April in Merlin, Oregon, is a mild spring month, with temperature in the range of an average high of 57.9°F (14.4°C) and an average low of 35.4°F (1.9°C). The shift into April brings a slight increase in the average high-temperature, moving from a cool 52.5°F (11.4°C) in March to a refreshing 57.9°F (14.4°C). Weather in April »Weather in May
The last month of the spring, May, is an enjoyable month in Merlin, Oregon, with an average temperature varying between 39.7°F (4.3°C) and 66.7°F (19.3°C). May's onset brings a minor rise in the average high-temperature, moving from a refreshing 57.9°F (14.4°C) in April to an enjoyable 66.7°F (19.3°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Merlin, Oregon, with an average temperature ranging between min 44.1°F (6.7°C) and max 73.8°F (23.2°C). As June sets, the average high-temperature shows a slight increase, moving up from an enjoyable 66.7°F (19.3°C) in May to a warm 73.8°F (23.2°C). Weather in June »Weather in July
July, like June, in Merlin, Oregon, is a moderately hot summer month, with an average temperature ranging between min 48.7°F (9.3°C) and max 83.8°F (28.8°C). The transition from June to July brings a temperature rise, with average high-temperatures increasing from a warm 73.8°F (23.2°C) to a still moderately hot 83.8°F (28.8°C). Weather in July »Weather in August
August, the last month of the summer in Merlin, is another warm month, with an average temperature fluctuating between 84.7°F (29.3°C) and 49.1°F (9.5°C). August, noted for its average high-temperature of 84.7°F (29.3°C) and an average low-temperature of 49.1°F (9.5°C), is considered the warmest month. For August, the heat index is appraised at a tropical 89.6°F (32°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Merlin, Oregon, with an average temperature ranging between min 45°F (7.2°C) and max 77.4°F (25.2°C). The shift from August to September includes a minor decrease in the average high-temperature, lightly dropping from a warm 84.7°F (29.3°C) to a still moderately hot 77.4°F (25.2°C). Weather in September »Weather in October
October, the same as September, is another enjoyable autumn month in Merlin, Oregon, with an average temperature varying between 65.5°F (18.6°C) and 40.6°F (4.8°C). Merlin experiences a temperature shift at the start of October, with average high-temperatures adjusting from a moderately hot 77.4°F (25.2°C) in September to a refreshing 65.5°F (18.6°C). Weather in October »Weather in November
November, the last month of the autumn in Merlin, is another cool month, with temperature in the range of an average high of 54°F (12.2°C) and an average low of 36°F (2.2°C). Stepping into November, Merlin observes a temperature decline, with the average high falling from October's comfortable 65.5°F (18.6°C) to a cool 54°F (12.2°C). Weather in November »Weather in December
December, the first month of the winter in Merlin, is still a chilly month, with temperature in the range of an average low of 31.5°F (-0.3°C) and an average high of 46°F (7.8°C). December, noted for its average high-temperature of 46°F (7.8°C) and an average low-temperature of 31.5°F (-0.3°C), is considered the coldest month. Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Merlin, OR
The warmest month (with the highest average high temperature) is August (84.7°F).
The month with the lowest average high temperature is December (46°F).
The month with the highest average low temperature is August (49.1°F).
The coldest month (with the lowest average low temperature) is December (31.5°F).
Average pressure
Merlin, OR
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
30.07"Hg - Average pressure in May:
30.03"Hg - Average pressure in June:
30.02"Hg
- Average pressure in July:
30.01"Hg - Average pressure in August:
29.99"Hg - Average pressure in September:
30"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is August (29.99"Hg).
Average wind speed
Merlin, OR
- Average wind speed in January:
3.9mph - Average wind speed in February:
3.8mph - Average wind speed in March:
4mph - Average wind speed in April:
3.9mph - Average wind speed in May:
3.7mph - Average wind speed in June:
3.8mph
- Average wind speed in July:
3.5mph - Average wind speed in August:
3.2mph - Average wind speed in September:
3.3mph - Average wind speed in October:
3.4mph - Average wind speed in November:
3.5mph - Average wind speed in December:
3.7mph
The windiest month (with the highest average wind speed) is March (4mph).
The calmest month (with the lowest average wind speed) is August (3.2mph).
Average humidity
Merlin, OR
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (63%).
Average rainfall
Merlin, OR
- Average rainfall in January:
3.98" - Average rainfall in February:
3.11" - Average rainfall in March:
3.19" - Average rainfall in April:
2.01" - Average rainfall in May:
1.69" - Average rainfall in June:
0.71"
The wettest month (with the highest rainfall) is December (4.02").
The driest month (with the least rainfall) is July (0.12").
Average rainfall days
Merlin, OR
- Average rainfall days in January:
15.3 days - Average rainfall days in February:
15.2 days - Average rainfall days in March:
18.7 days - Average rainfall days in April:
15.9 days - Average rainfall days in May:
11.8 days - Average rainfall days in June:
7.4 days
- Average rainfall days in July:
3.4 days - Average rainfall days in August:
2.5 days - Average rainfall days in September:
5.3 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
13.4 days - Average rainfall days in December:
15.9 days
The month with the highest number of rainy days is March (18.7 days).
The month with the least rainy days is August (2.5 days).
Average snowfall
Merlin, OR
The month with the highest snowfall is February (1.5").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Merlin, OR
- Average snowfall days in January:
1.3 days - Average snowfall days in February:
2.8 days - Average snowfall days in March:
2 days - Average snowfall days in April:
0.2 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:
0.5 days - Average snowfall days in December:
1.1 days
The month with the highest number of snowfall days is February (2.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Merlin, OR
- Average daylight in January:
9h and 30min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 18min
- Average daylight in July:
14h and 54min - Average daylight in August:
13h and 54min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 48min - Average daylight in December:
9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
4h and 54min - Average sunshine in February:
5h and 12min - Average sunshine in March:
6h and 24min - Average sunshine in April:
8h and 30min - Average sunshine in May:
9h and 54min - Average sunshine in June:
10h and 42min
- Average sunshine in July:
11h and 48min - Average sunshine in August:
11h and 48min - Average sunshine in September:
10h and 24min - Average sunshine in October:
6h and 30min - Average sunshine in November:
5h and 42min - Average sunshine in December:
4h and 42min
The months with the most sunshine are July and August (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 42min).
Average sunshine days
Merlin, OR
- Average sunshine days in January:
14.7 days - Average sunshine days in February:
11.6 days - Average sunshine days in March:
10.8 days - Average sunshine days in April:
11.7 days - Average sunshine days in May:
16.3 days - Average sunshine days in June:
19.1 days
- Average sunshine days in July:
26.7 days - Average sunshine days in August:
26.5 days - Average sunshine days in September:
23.9 days - Average sunshine days in October:
18.9 days - Average sunshine days in November:
14.3 days - Average sunshine days in December:
13.5 days
The month with the most sunshine days is July (26.7 days).
The month with the least sunshine days is March (10.8 days).
Average UV index
Merlin, OR
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Merlin, OR
The month with the most cloud cover is March (Cloud cover 54).
The month with the least cloud cover is August (Cloud cover 16).
Average visibility
Merlin, OR
The month with the highest visibility is August (6mi).
The months with the lowest visibility are January, February, March, April and December (4mi).





