Last updated: June 24, 2025
In September, the average temperature in Karlstad, United States hovers around 14°C (58°F). During this month, temperatures can dip as low as -3°C (26°F) and soar up to 31°C (88°F). Expect 76 mm (3.0 in) of precipitation over approximately 10 days, accompanied by an average humidity of 75%. Stay prepared for a mix of mild and potentially warm days!
In September in Karlstad, the average temperature is 14°C (58°F). Maximum temperatures can reach 31°C (88°F), while the minimum can drop as low as -3°C (26°F). Travelers should be prepared for a wide range of temperatures during this month.
In Karlstad in September, the total precipitation amount is 76 mm (3.0 in) spread over a period of 10 days.
In Karlstad in September humidity is 75%. With an average temperature of 14°C (58°F), this humidity feels like a lingering blanket of warmth, making travel both refreshing and a bit stifling, as the moisture in the air may leave you feeling slightly sticky while enjoying outdoor adventures.
In Karlstad in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Karlstad.
UV Risk Categories
Weather in Karlstad varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Karlstad, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | -14°C (8°F) | 18 mm (0.7 inches) | 94% | low |
February Weather | -15°C (6°F) | 20 mm (0.8 inches) | 91% | moderate |
March Weather | -4°C (25°F) | 24 mm (0.9 inches) | 90% | moderate |
April Weather | 3°C (38°F) | 34 mm (1.3 inches) | 81% | high |
May Weather | 12°C (55°F) | 54 mm (2.1 inches) | 74% | very high |
June Weather | 19°C (67°F) | 88 mm (3.5 inches) | 75% | very high |
July Weather | 21°C (71°F) | 75 mm (2.9 inches) | 74% | very high |
August Weather | 19°C (67°F) | 73 mm (2.9 inches) | 77% | very high |
September Weather | 14°C (58°F) | 76 mm (3.0 inches) | 75% | high |
October Weather | 6°C (42°F) | 83 mm (3.3 inches) | 78% | moderate |
November Weather | -4°C (25°F) | 29 mm (1.1 inches) | 87% | low |
December Weather | -10°C (15°F) | 33 mm (1.3 inches) | 93% | low |