Climate - Klamath Falls (Oregon)

The climate of Klamath Falls is semi-arid continental, with very cold winters and hot summers, and with strong temperature variations between night and day.
The city is located in southern Oregon, at an altitude of 1,250 meters (4,100 ft), in the arid and continental area of ​​the state, the one east of the Cascade Range.
In winter, cold waves are possible, during which the temperature can drop to -20 °C (-4 °F) or even below. In 2013, it dropped to -29 °C (-20 °F). In one year, 93 cm (37 in) of snow fall.
In summer there are strong temperature variations between night and day. At night, it can get cold even in the height of summer. However, on the hottest days of the year, the temperature can reach 36/38 °C (97/100 °F). At the end of June 2021, it reached 39.5 °C (103 °F).
The average temperature of the coldest month (December) is of -0.9 °C (30.4 °F), that of the warmest month (July) is of 19.5 °C (67.1 °F). Here are the average temperatures.

Precipitation amounts to 285 millimeters (11.1 inches) per year: it is therefore scarce. It ranges from 5 mm (0.2 in) in the driest months (July, August) to 45 mm (1.8 in) in the wettest (December). Here is the average precipitation.

Best Time

To visit Klamath Falls, you can choose the months of May and September. It is true that it rains a little more often than in summer (especially in May), and that it gets colder at night, but in this way, you can avoid the heat that can occur in summer. September is probably the best month.

Back to the climate of Oregon.

Klamath Falls - Weather by month

Based on the period 1991-2020

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In January, the weather in Klamath Falls is usually very cold. The average temperature is of -0.3 °C (32 °F), with a minimum of -5.8 °C (21.5 °F) and a maximum of 5.3 °C (41.5 °F).
On the coldest nights of the month, the temperature usually drops to around -15 °C (5 °F). However, it dropped to -28.3 °C (-18.9 °F) in January 2017.
On the warmest days of the month, the temperature usually reaches around 11.5 °C (52.5 °F). However, it reached 15 °C (59 °F) in January 2003.
Precipitation amounts to 40 mm (1.6 in), distributed over 11 days.
The day lasts on average 9 hours and 30 minutes.
The average humidity is 80%. Hence, the air is normally humid.
The average wind speed is 10 kph (6 mph).

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In February, the weather in Klamath Falls is usually cold. The average temperature is of 1.6 °C (35 °F), with a minimum of -4.7 °C (23.5 °F) and a maximum of 7.9 °C (46.3 °F).
On the coldest nights of the month, the temperature usually drops to around -11.5 °C (11.5 °F). However, it dropped to -20 °C (-4 °F) in February 2011.
On the warmest days of the month, the temperature usually reaches around 14.5 °C (58.5 °F). However, it reached 21.1 °C (70 °F) in February 1995.
Precipitation amounts to 30 mm (1.2 in), distributed over 9 days.
The day lasts on average 10 hours and 35 minutes.
The average humidity is 73%. Hence, the air is normally humid.
The average wind speed is 11 kph (7 mph).

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In March, the weather in Klamath Falls is usually quite cold. However, there are remarkable differences between night and day. The average temperature is of 4.1 °C (39 °F), with a minimum of -3.1 °C (26.5 °F) and a maximum of 11.3 °C (52.3 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -9 °C (16 °F). However, it dropped to -17 °C (1.4 °F) in March 2012.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 19.5 °C (67 °F). However, it reached 22.8 °C (73 °F) in March 2004.
Precipitation amounts to 25 mm (1 in), distributed over 11 days.
The day lasts on average 12 hours and 0 minutes.
The average humidity is 66%.
The average wind speed is 13 kph (8 mph).

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In April, the weather in Klamath Falls is usually quite cold. However, there are remarkable differences between night and day. The average temperature is of 6.4 °C (43 °F), with a minimum of -1.6 °C (29.1 °F) and a maximum of 14.3 °C (57.8 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -7.5 °C (19 °F). However, it dropped to -11.1 °C (12 °F) in April 2010.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 24 °C (75 °F). However, it reached 27.8 °C (82 °F) in April 2009.
Precipitation amounts to 25 mm (1 in), distributed over 9 days.
The day lasts on average 13 hours and 25 minutes.
The average humidity is 60%.
The average wind speed is 13 kph (8 mph).

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In May, the weather in Klamath Falls is usually mild. However, there are remarkable differences between night and day. The average temperature is of 10.9 °C (52 °F), with a minimum of 2.3 °C (36.2 °F) and a maximum of 19.6 °C (67.2 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -4 °C (24.5 °F). However, it dropped to -8.3 °C (17.1 °F) in May 2008.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 28.5 °C (83.5 °F). However, it reached 32.8 °C (91 °F) in May 2008.
Precipitation amounts to 25 mm (1 in), distributed over 8 days.
The day lasts on average 14 hours and 35 minutes. So the days are long.
The average humidity is 55%.
The average wind speed is 12 kph (8 mph).

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In June, the weather in Klamath Falls is usually very mild. However, there are remarkable differences between night and day. The average temperature is of 14.9 °C (59 °F), with a minimum of 5.2 °C (41.4 °F) and a maximum of 24.6 °C (76.2 °F).
On the coldest nights, which normally occur at the beginning of the month, the temperature usually drops to around -1 °C (30.5 °F). However, it dropped to -5 °C (23 °F) in June 2001.
On the warmest days, which normally occur at the end of the month, the temperature usually reaches around 32.5 °C (90 °F). However, it reached 36.7 °C (98.1 °F) in June 2015.
Precipitation amounts to 15 mm (0.6 in), distributed over 5 days.
The day lasts on average 15 hours and 10 minutes. So the days are long. June 21, the summer solstice, is the longest day of the year in the Northern Hemisphere.
The average humidity is 50%.
The average wind speed is 11 kph (7 mph).

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In July, the warmest month of the year, the weather in Klamath Falls is usually warm. However, there are remarkable differences between night and day. The average temperature is of 19.5 °C (67 °F), with a minimum of 8.8 °C (47.8 °F) and a maximum of 30.2 °C (86.3 °F).
On the coldest nights of the month, the temperature usually drops to around 3.5 °C (38.5 °F). However, it dropped to 1 °C (33.8 °F) in July 1999.
On the warmest days of the month, the temperature usually reaches around 35.5 °C (95.5 °F). However, it reached 38.3 °C (100.9 °F) in July 2013.
Precipitation amounts to only 5 mm (0.2 in), distributed over 2 days.
The day lasts on average 14 hours and 55 minutes. So the days are long.
The average humidity is 46%.
The average wind speed is 10 kph (6 mph).

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In August, the weather in Klamath Falls is usually warm. However, there are remarkable differences between night and day. The average temperature is of 18.7 °C (66 °F), with a minimum of 8.1 °C (46.5 °F) and a maximum of 29.3 °C (84.8 °F).
On the coldest nights of the month, the temperature usually drops to around 3 °C (37.5 °F). However, it dropped to -1 °C (30.2 °F) in August 1999.
On the warmest days of the month, the temperature usually reaches around 35 °C (94.5 °F). However, it reached 38 °C (100.4 °F) in August 1998.
Precipitation amounts to only 5 mm (0.2 in), distributed over 2 days.
The day lasts on average 13 hours and 50 minutes.
The average humidity is 46%.
The average wind speed is 9 kph (6 mph).

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In September, the weather in Klamath Falls is usually very mild. However, there are remarkable differences between night and day. The average temperature is of 14.6 °C (58 °F), with a minimum of 3.9 °C (39 °F) and a maximum of 25.3 °C (77.5 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -1.5 °C (29.5 °F). However, it dropped to -4.4 °C (24.1 °F) in September 2007.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 32 °C (89.5 °F). However, it reached 38 °C (100.4 °F) in September 1998.
Precipitation amounts to 10 mm (0.4 in), distributed over 3 days.
The day lasts on average 12 hours and 25 minutes.
The average humidity is 48%.
The average wind speed is 9 kph (5 mph).

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In October, the weather in Klamath Falls is usually mild. However, there are remarkable differences between night and day. The average temperature is of 8.6 °C (47 °F), with a minimum of -0.7 °C (30.7 °F) and a maximum of 17.9 °C (64.2 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -7 °C (19.5 °F). However, it dropped to -13.3 °C (8.1 °F) in October 2002.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 26.5 °C (79.5 °F). However, it reached 32 °C (89.6 °F) in October 1996.
Precipitation amounts to 20 mm (0.8 in), distributed over 6 days.
The day lasts on average 11 hours and 0 minutes.
The average humidity is 59%.
The average wind speed is 9 kph (5 mph).

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In November, the weather in Klamath Falls is usually cold. However, there are remarkable differences between night and day. The average temperature is of 2.8 °C (37 °F), with a minimum of -3.9 °C (24.9 °F) and a maximum of 9.5 °C (49.1 °F).
On the coldest nights, which normally occur at the end of the month, the temperature usually drops to around -12.5 °C (10 °F). However, it dropped to -20 °C (-4 °F) in November 2010.
On the warmest days, which normally occur at the beginning of the month, the temperature usually reaches around 18.5 °C (65 °F). However, it reached 22.2 °C (72 °F) in November 2020.
Precipitation amounts to 35 mm (1.4 in), distributed over 10 days.
The day lasts on average 9 hours and 50 minutes.
The average humidity is 74%. Hence, the air is normally humid.
The average wind speed is 9 kph (6 mph).

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In December, the coldest month of the year, the weather in Klamath Falls is usually very cold. The average temperature is of -0.9 °C (30 °F), with a minimum of -6.3 °C (20.6 °F) and a maximum of 4.6 °C (40.3 °F).
On the coldest nights of the month, the temperature usually drops to around -14.5 °C (6 °F). However, it dropped to -29 °C (-20.2 °F) in December 2013.
On the warmest days of the month, the temperature usually reaches around 11.5 °C (52.5 °F). However, it reached 21.1 °C (70 °F) in December 2014.
Precipitation amounts to 45 mm (1.8 in), distributed over 12 days.
The day lasts on average 9 hours and 5 minutes. December 21, the winter solstice, is the shortest day of the year in the Northern Hemisphere.
The average humidity is 81%. Hence, the air is normally humid.
The average wind speed is 10 kph (6 mph).