Last updated: June 24, 2025
In Johnson, United States, the average temperature in September hovers around 22°C (73°F), with minima dipping to 2°C (36°F) and maxima soaring up to 40°C (105°F). During this month, you can expect about 34 mm (1.3 in) of precipitation spread over 4 days, contributing to an average humidity of 79%. Prepare accordingly for a blend of warmth and occasional rain!
In September, in Johnson, the average temperature is 22°C (73°F). The maximum can reach 40°C (105°F), while the minimum can be as low as 2°C (36°F). It's advisable to pack a variety of clothing to accommodate the wide temperature range during your travels.
In Johnson in September, the precipitation amount is 34 mm (1.3 in) over a span of 4 days.
In Johnson in September, humidity is 79%. With an average temperature of 22°C (73°F), this humidity feels like a warm, muggy embrace that makes outdoor activities feel more taxing, and a quick stroll can leave you feeling slightly sticky and ready for a refreshing break.
In Johnson in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Johnson.
UV Risk Categories
Weather in Johnson varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Johnson, focusing on differences in temperature, rainfall, humidity, and UV levels.
Temperature | Precipitation | Humidity | UV | |
---|---|---|---|---|
January Weather | 2°C (35°F) | 15 mm (0.6 inches) | 74% | moderate |
February Weather | 2°C (36°F) | 13 mm (0.5 inches) | 77% | moderate |
March Weather | 9°C (48°F) | 38 mm (1.5 inches) | 65% | very high |
April Weather | 13°C (55°F) | 44 mm (1.7 inches) | 67% | very high |
May Weather | 18°C (65°F) | 84 mm (3.3 inches) | 81% | extreme |
June Weather | 25°C (77°F) | 38 mm (1.5 inches) | 82% | extreme |
July Weather | 27°C (81°F) | 38 mm (1.5 inches) | 82% | extreme |
August Weather | 25°C (78°F) | 60 mm (2.4 inches) | 84% | extreme |
September Weather | 22°C (73°F) | 34 mm (1.3 inches) | 79% | very high |
October Weather | 14°C (57°F) | 29 mm (1.1 inches) | 75% | high |
November Weather | 8°C (47°F) | 8 mm (0.3 inches) | 79% | moderate |
December Weather | 3°C (38°F) | 19 mm (0.8 inches) | 83% | moderate |