August Weather in Lake Arrowhead, United States

Last updated: February 24, 2025

August in Lake Arrowhead presents a delightful medley of warm weather and refreshing tranquility. With maximum temperatures soaring to 39°C (103°F) and averaging a comfortable 26°C (79°F), visitors can enjoy the warm sun while taking in the stunning natural beauty. Nights cool down pleasantly, reaching a minimum of 14°C (57°F), offering a perfect respite from the daytime heat. This month sees minimal rainfall, with only 11 mm (0.4 in) of precipitation spread over just 2 days, ensuring ample opportunity for outdoor activities. With humidity levels at a manageable 28%, the weather in August invites adventure and relaxation in this picturesque setting.

August Temperature in Lake Arrowhead

In August, Lake Arrowhead basks in warm summer temperatures, with a minimum of 14°C (57°F) and an average of 26°C (79°F), making it an ideal retreat for outdoor enthusiasts. The maximum temperature can reach a steamy 39°C (103°F), echoing the hot peaks seen in July. As summer transitions towards fall, temperatures show a slight cooling trend compared to the previous months, although the warmth remains inviting. This invigorating climate not only enhances the charm of the lake but also attracts visitors eager to enjoy the picturesque scenery and recreational activities before the approach of cooler days in September.

August Weather in Lake Arrowhead: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Lake Arrowhead, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec484952596373797974645748
Data source: Temperature data for Lake Arrowhead generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

August Precipitation in Lake Arrowhead

In August, Lake Arrowhead experiences a noticeable dip in precipitation, with just 11 mm (0.4 in) recorded over two days. This marks a continuation of the region's dry summer stretch, following July’s slight uptick of 12 mm. The trend is evident as early summer months showcase minimal rainfall, with June contributing a mere 4 mm (0.1 in). As the year progresses, August holds the position as one of the driest months, hinting at the dry warmth characterizing this time of year. This pattern sets the stage for a gradual increase in precipitation as autumn approaches, allowing the vibrant seasonal shifts to emerge in the following months.

August Precipitation Trends in Lake Arrowhead

The chart displays monthly precipitation patterns in Lake Arrowhead, with values for each month alongside August's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec515653241341211981956
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in Lake Arrowhead

In August, Lake Arrowhead experiences one of its driest months, with humidity dropping to 28%, the lowest point of the year. This significant decrease follows a steady decline from January's humid 76%, showcasing a clear trend of diminishing moisture as summer progresses. July also sees a low humidity level at 29%, indicating that visitors can expect comfortable, dry conditions to enjoy outdoor activities. As summer wanes and autumn approaches, humidity begins to rise again, reaching 41% in September, but August remains a peak time for those looking to bask in the sun and relish the refreshing mountain air without the dampness often found in other seasons.

August Average Humidity in Lake Arrowhead

This chart illustrates the average monthly humidity levels in Lake Arrowhead, with August's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how August's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%69%57%45%34%29%28%42%54%68%75%
Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Lake Arrowhead

In Lake Arrowhead, the August UV Index maintains an extreme level of 11, signaling a continued demand for sun safety just like the peak summer months of June and July. With a quick burn time of just 10 minutes, it’s crucial for outdoor enthusiasts to stay vigilant against harmful UV rays. Following the pattern established from spring through mid-summer, this trend highlights the area's potent sun exposure and underscores the importance of protective measures, especially for those enjoying the region's beautiful landscapes. For more detailed insights on UV levels throughout the year, visit Lake Arrowhead UV Index.

Maximum UV Index Levels in Lake Arrowhead for August

The chart shows the monthly maximum UV Index (UVI) for Lake Arrowhead in August, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec469111112121110854
Data source: Lake Arrowhead August UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

August Sunshine in Lake Arrowhead

August in Lake Arrowhead ushers in a delightful blend of warmth and sunshine, boasting 363 hours of sun that perfectly captures the essence of summer. As the peak of the sunny season, August displays a slight decline from July's 383 hours, yet it remains significantly higher than the winter months. This trend highlights the region’s long, sun-soaked days that transition into the mellow warmth of early fall. With gradually decreasing hours of sunlight leading into September, visitors can still relish in late summer activities, all while soaking up the vibrant atmosphere that makes Lake Arrowhead a cherished destination during this enchanting time of year.

Monthly Sunshine Duration in Lake Arrowhead: August Highlighted

The August sunshine duration represents the total number of hours Lake Arrowhead experiences direct sunlight during the month of August, excluding cloudy or obstructed periods. This chart compares the sunshine duration of August with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec190h244h295h328h370h379h383h363h322h299h258h228h
Data source: Lake Arrowhead August Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Lake Arrowhead During August

In Lake Arrowhead, August shines brightly with an impressive 82% chance of sunny weather, making it one of the sunniest months of the year. This trend of increasing sunshine begins in the spring, peaking in summer, as seen from 80% in May and maintaining a consistent warmth with 75% in June and 63% in July. Interestingly, the chance of sun continues to rise well into early fall, with September reaching 87%, suggesting that the allure of sunny days lingers longer than just summer. This pattern not only enhances outdoor activities but also invites visitors to bask in the warmth of this beautiful mountain escape.

Percentage of Sunny Days in August in Lake Arrowhead

The chart illustrates the percentage of sunny days in Lake Arrowhead throughout the year, with August highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Lake Arrowhead experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec61%71%66%67%80%75%63%82%87%71%77%49%
Data source: Lake Arrowhead August chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Lake Arrowhead in August

As August unfolds in Lake Arrowhead, the daylight duration settles at a comfortable 13 hours, marking a gradual decline from the peak of 14 hours witnessed in both June and July. This month serves as a transitional phase, where the long sunny days of summer begin to recede, paving the way for the cooler autumn months ahead. Following the vibrant energy of late summer, September will see daylight dip to 12 hours, a clear sign that nature is preparing for its seasonal shift. This pattern of gradually shortening days continues through the fall, suggesting that while summer may be nearing its end, the warm memories linger on in the richness of the daylight.

Average Daylight Hours in Lake Arrowhead for August

The chart illustrates the variation in daylight duration in Lake Arrowhead throughout the year, with August highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 8m10h 57m11h 59m13h 3m13h 57m14h 23m14h 9m13h 21m12h 20m11h 16m10h 21m9h 53m
Data source: Lake Arrowhead daylight hours, calculated by summing the hours between sunrise and sunset for each day.

August Winds in Lake Arrowhead

In August, the winds in Lake Arrowhead maintain a gentle presence, averaging 2.2 m/s (5 mph), consistent with summer's tranquil atmosphere. This slight dip from 2.3 m/s in May and June reflects the overall trend of decreasing wind speeds as the year progresses, with the calmest months occurring in the later summer and early fall. As we transition into September, the winds ease further to 2.0 m/s, signaling a shift towards the serene stillness of autumn. Overall, the mild breezes of August create a perfect backdrop for outdoor activities, enhancing the charm of this picturesque lakeside locale.

Average August Wind Speed in Lake Arrowhead

The chart displays monthly wind speed patterns in Lake Arrowhead, with values for each month shown alongside August's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how August's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.42.22.32.42.32.22.12.2 m/s2.02.12.12.1
Data source: Lake Arrowhead August wind data, generated using information from the Copernicus Climate Change Service.

How August Weather in Lake Arrowhead Compares to Other Months

The weather in Lake Arrowhead changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of August's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Lake Arrowhead and find detailed weather information for every month.

The weather in August contrasts sharply with that of January in Lake Arrowhead. In August, temperatures soar with a minimum of 14°C (57°F) and an average of 26°C (79°F), reaching highs of up to 39°C (103°F). On the other hand, January experiences a much cooler climate, with temperatures dipping as low as -5°C (24°F), averaging 9°C (49°F), and peaking at 24°C (76°F). While August enjoys minimal precipitation of only 11 mm (0.4 in) over about 2 days, January sees significantly more rainfall at 51 mm (2.0 in) across 6 days. Additionally, the humidity in August is considerably lower at 28%, compared to January's much higher humidity level of 76%. For more details on the January weather, check out Lake Arrowhead weather in January.

August weather is characterized by warm and dry conditions, with temperatures ranging from a minimum of 14°C (57°F) to a scorching maximum of 39°C (103°F). This month typically sees only about 11 mm (0.4 in) of precipitation spread over just two days, and with low humidity at 28%, the atmosphere feels quite comfortable. In contrast, February brings a chillier climate, where temperatures can drop as low as -4°C (24°F) and reach a pleasant high of 25°C (77°F). This month is much wetter, receiving around 56 mm (2.2 in) of rain over six days, and the humidity levels soar to 80%, creating a distinctly different and more humid experience. For more details, you can check out Lake Arrowhead weather in February.

August and March present strikingly different weather experiences. In August, temperatures soar with a minimum of 14°C (57°F) and an average of 26°C (79°F), peaking at a high of 39°C (103°F). The month is characterized by minimal precipitation of only 11 mm (0.4 in) across just two days and low humidity at 28%. In contrast, March showcases a cooler climate with a minimum temperature of -2°C (29°F) and an average of 11°C (52°F), reaching up to 29°C (84°F). This month sees significantly more precipitation, totaling 52 mm (2.1 in) over nine days, and a higher humidity level at 69%. For more detail on March weather, check out Lake Arrowhead weather in March.

In comparing the weather of August and April, a marked contrast is evident in both temperature and humidity levels. August boasts significantly higher temperatures, with an average of 26°C (79°F) and peaks reaching up to 39°C (103°F). In stark contrast, April experiences cooler conditions, featuring an average temperature of 15°C (60°F) and a maximum of 32°C (89°F). While both months see precipitation over two days, April receives more rainfall at 24 mm (0.9 in), compared to August's 11 mm (0.4 in). Additionally, humidity is notably higher in April at 57%, whereas August tends to be much drier with only 28% humidity. For more detailed insights, you can explore Lake Arrowhead weather in April.

The weather in August is generally warmer and drier compared to May, with average temperatures reaching a high of 26°C (79°F) and peaking at 39°C (103°F), contrasted with May's average of 17°C (64°F) and a maximum of 34°C (94°F). While August only sees around 11 mm (0.4 in) of precipitation over just 2 days, May has slightly higher precipitation at 13 mm (0.5 in) spread across 3 days, and notably more humidity at 45% compared to August's 28%. For those looking to explore the nuances of May weather, more details can be found at Lake Arrowhead weather in May.

In comparing the weather between August and June, August tends to be warmer, with an average temperature of 26°C (79°F) compared to June's 23°C (73°F). Both months can reach a maximum of 39°C (103°F), but August has a higher minimum temperature of 14°C (57°F) versus June's 9°C (48°F). Precipitation is relatively low in both months, but August experiences slightly more rain, accumulating 11 mm (0.4 in) over 2 days, while June sees just 4 mm (0.1 in) on a single day. Notably, humidity is lower in August at 28%, whereas June's humidity sits at 34%. For more detailed weather information, you can check Lake Arrowhead weather in June.

When comparing the weather in August and July, both months display very similar average temperatures, with August's minimum at 14°C (57°F) and July's at 13°C (55°F). However, July experiences slightly higher maximum temperatures, reaching up to 41°C (106°F) compared to August's peak of 39°C (103°F). Precipitation levels are almost identical, with July recording 12 mm (0.5 in) and August at 11 mm (0.4 in), both occurring over two days. Humidity remains fairly consistent, at 28% in August and 29% in July. For more details on July's climate, you can view the Lake Arrowhead weather in July.

August and September exhibit noticeable differences in weather patterns. August typically features warmer temperatures, with an average of 26°C (79°F) and maximums reaching 39°C (103°F), while September sees a slight drop in average temperature to 23°C (74°F), although maximums can still spike to 42°C (108°F). Precipitation levels are relatively similar, with both months receiving around 11 mm (0.4 in) in August and 9 mm (0.4 in) in September, occurring on two days in each month. Humidity levels rise in September, recorded at 41%, compared to a drier 28% in August. For more detailed insights into the weather, you can check Lake Arrowhead weather in September.

August and October offer contrasting weather experiences. In August, temperatures range from a minimum of 14°C (57°F) to a scorching maximum of 39°C (103°F), with an average of 26°C (79°F). The month sees minimal precipitation, with only 11 mm (0.4 in) across just two days and low humidity at 28%. In stark contrast, October presents cooler conditions, with temperatures dropping to a minimum of 3°C (38°F) and a more moderate maximum of 36°C (97°F). The average temperature in October is around 18°C (65°F), and though precipitation is slightly lower at 8 mm (0.3 in), it occurs just once during the month, coupled with a rise in humidity to 54%. For more detailed information, check out Lake Arrowhead weather in October.

August and November exhibit strikingly different weather patterns. In August, temperatures soar with a minimum of 14°C (57°F) and can reach up to a sweltering 39°C (103°F), averaging around 26°C (79°F), while humidity remains low at 28% and precipitation is minimal at just 11 mm (0.4 in) over 2 days. In contrast, November brings much cooler conditions with temperatures dipping to a minimum of -1°C (31°F) and a max of 28°C (83°F), resulting in an average of 14°C (57°F). Precipitation also increases in November, totaling 19 mm (0.8 in) over the same 2 days, and humidity rises significantly to 68%. For a detailed look at the weather during this time, check out Lake Arrowhead weather in November.

August and December present stark contrasts in weather conditions. In August, temperatures range from a cool 14°C (57°F) at night up to a scorching 39°C (103°F) during the day, with average daytime temperatures around 26°C (79°F). The month experiences minimal rain, with only 11 mm (0.4 in) of precipitation over just 2 days and low humidity at 28%. In contrast, December features significantly lower temperatures, with a minimum of -4°C (25°F) and a maximum of 24°C (76°F), and an average of only 9°C (49°F). The month is much wetter, accumulating 56 mm (2.2 in) of precipitation over 5 days, accompanied by a high humidity level of 75%. For more detailed insights, you can check out Lake Arrowhead weather in December.

Compare Lake Arrowhead's Climate with Cities Worldwide

Conclusion: What to Expect From August Weather in Lake Arrowhead

August in Lake Arrowhead offers a unique weather experience that sets it apart from the rest of the year. With warm temperatures peaking at a toasty 39°C (103°F), the month showcases a vibrant and sunny atmosphere that invites outdoor activities and relaxation by the water. Unlike the wetter months, August enjoys minimal precipitation, with only a couple of rainy days, allowing for ample sunshine and lower humidity levels at 28%. This delightful blend of warmth and dry conditions makes August a prime time for visitors to enjoy everything the stunning landscape has to offer. For more details on what to expect throughout the year, explore the full overview at Lake Arrowhead Climate.