The 72-mile Tour de Tahoe bike ride is Sept. 12. Circle the lake on a supported ride that begins and ends in South Lake Tahoe. For more information go here.

The Tahoe Rim Trail Association is offering a backpacking course just for women. Led by volunteer guides and experienced backpackers Ellen Goldsmith and Sue Henson, this class will introduce backpacking basic, trip planning, how to pack, bear awareness, campsite selection and set up, meal prep and Leave No Trace principles. Beginners are welcome but must be able to hike at elevation carrying a 20 to 30 pound pack, and all participants must provide their own gear, food and clothing. The total mileage for the two day hike is eight miles. For more information go to tahoerimtrail.org

The Sierra Buttes Trail Stewardship and Gray Eagle Lodge will host a full moon hike on Sept. 23. The family friendly event begins at the lodge, off of Gold Lakes Highway, for dinner, happy hour and an informational talk on the future of trail projects in Sierra and Plumas counties. This will be folowed by a 2-mile round trip hike from Gray Eagle Lodge to beautiful Smith Lake. Participants will need to RSVP and bring plenty of water, layers and a flashlight. Go to sierratrails.org

The Tahoe Sierra Century bike ride is Sept. 25. It starts and ends at Squaw Valley and takes you as far as Donner Summit and Kingvale, if you want to do the whole thing. Early registration closes Sept. 15. Details here.

An area of high pressure over the west has begun to bake us below its lid, raising temperatures a few degrees each day. That trend is forecast to continue through Friday, when highs should peak in the 80s around the Lake and the 70s near the mountain passes.

A trough of low pressure of the Pacific Coast will then start to make itself felt here. The trough will swing through the Pacific Northwest over the weekend and bring rain to Washington and Oregon and perhaps far northern California. But we should remain dry in Tahoe. We will get brushed by the southern boundary of the cooler air moving east, and that should moderate our temperatures Saturday and especially Sunday.

Once that trough moves through the forecast is a little uncertain. One computer models shows a secondary wave that could be as cool as the one we saw last weekend. But a competing forecast shows a return to more seasonal weather. We won’t know more until the track of that low establishes itself a little better.

Stay tuned for details as conditions change.

Forecast Highs

Tahoe City

Thursday 79
Friday 81
Saturday 74

At 7000 feet

Thursday 72
Friday 74
Saturday 70

Regional radar with rain/snow mix:
9

We should see temperatures climb a few degrees each day through Friday, when they will peak at 5 to 10 degrees above normal for this time of year.

A trough of low pressure out of the Pacific Northwest will try to nudge that high pressure to the east over the weekend, but we might not see and feel the effects until Sunday. By early next week Tahoe should be in the midst of a new cooling trend, back to normal or perhaps a bit below.

Stay tuned for details as conditions change.

Forecast Highs

Tahoe City

Wednesday 76
Thursday 77
Friday 81

At 7000 feet

Wednesday 70
Thursday 74
Friday 76

Regional radar with rain/snow mix:
9

A slowly building warming trend is in the offing at the moment as an area of high pressure builds over the west. Each of the next few days, through Thursday, should be warmer than the last, with temperatures topping out at just above normal for early September by the end of the week. We will likely see some east or northeast winds, with gusts along the ridges topping out at around 30 mph. Dry conditions should prevail.

Temperatures are forecast to peak on Friday before we see the reverse — a slow cooling trend. The ridge of high pressure will be kicked east as a trough of low pressure forms over the Pacific Northwest and moves south and east and begins to affect the Sierra’s weather. Temperatures should cool a tick or two over the weekend — not as much as last weekend but probably below normal for Labor Day.

So, first a little warmer, then a little cooler. Sounds good to us.

Stay tuned for details as conditions change.

Forecast Highs

Tahoe City

Tuesday 73
Wednesday 76
Thursday 77

At 7000 feet

Tuesday 65
Wednesday 74
Thursday 76

Regional radar with rain/snow mix:
9

High temperatures should rise between 5 and 10 degrees today and again on Tuesday, but clearing skies will mean rapid cooling in the evening. We could see overnight lows at or below freezing in the mountain valleys. The moisture from the weekend will also mean a chance of fog in the valleys. By Wednesday conditions should be back to normal for this time of year, and Thursday should be warm as well.

But things will likely peak there, as another trough of low pressure is forecast to form off the coast. The next cooling trend should not be as severe as the one that hit us over the weekend. But it will definitely hit the pause button on the warm-up.

Stay tuned for details as conditions change.

Forecast Highs

Tahoe City

Monday 61
Tuesday 73
Wednesday 76

At 7000 feet

Monday 49
Tuesday 57
Wednesday 63

Regional radar with rain/snow mix:
9

By Monday temperatures should be bouncing back and by Tuesday the region’s weather should be back to normal for this time of year. An area of high pressure will build and warm the Basin again. But another trough is looming for the end of the week. Probably not another serious cold front like this one, but enough to break any hot spell.

Stay tuned for details as conditions change.

Forecast Highs

Tahoe City

Sunday 54
Monday 61
Tuesday 70

At 7000 feet

Sunday 50
Monday 52
Tuesday 53

Regional radar with rain/snow mix:
9

Temperatures today could be as much as 20 degrees below normal as a cold front associated with the trough moves through the region. Winds of 20 mph to 30 mph can be expected, with higher gusts along the mountaintop ridges.

Precipitation with this system should be light, but we could see some scattered rain showers and thunderstorms. Snow above 8,500 feet is possible late today and Sunday.

By Sunday afternoon this system will be moving to our east, and by Monday the forecast calls for temperatures to begin to bounce back. Highs should return to normal for the end of August by Tuesday or Wednesday as an area of high pressure builds over the region.

Stay tuned for details as conditions change.

Forecast Highs

Tahoe City

Saturday 63
Sunday 54
Monday 61

At 7000 feet

Saturday 51
Sunday 50
Monday 54

Regional radar with rain/snow mix:
9

The transition should start today as monsoonal moisture drifts north from Southern California and Mexico and high winds start raking the mountain passes and the Sierra crest. We could see some thunderstorms in Mono County and perhaps closer to Tahoe, although they should be more scattered as they move north. It will also be a bit cooler today than Wednesday.

On Friday some strong westerly winds aloft will push that thunderstorm activity east into the Nevada desert as the leading edge of a cold front begins to make itself felt in the Sierra. It will be cooler but probably drier as well.

For the weekend, a wave of energy from the trough that will be moving in from the Pacific Northwest should make its way across the Sierra. This won’t feel like a summer storm. More like fall, with temperatures dropping into the 60s around the Lake and the 50s at the mountain passes. We could see some rain Saturday and Sunday, showers mixed with scattered thunderstorms. The forecast even allows for the possibility of some snow showers above 9,000 feet.

The trough moves through by Monday and a new area of high pressure should form behind it, returning temperatures quickly to near normal for the end of August.

Stay tuned for details as conditions change.

Forecast Highs

Tahoe City

Thursday 79
Friday 74
Saturday 63

At 7000 feet

Thursday 74
Friday 67
Saturday 54

Regional radar with rain/snow mix:
9

The ridge of high pressure that has been responsible for this week’s heat has one more day in it, and it could be a record-breaking one. The forecast calls for highs in the 90s in the foothills and the 80s around the Lake and even in some higher elevation locations. We should begin to see some clouds developing later today as thunderstorms form in eastern Mono County and western Nevada, but the Tahoe Basin is forecast to remain dry.

By Thursday things will begin to change. A deepening trough of low pressure off the Pacific Northwest coast is forecast to push cooler air into the region. Temperatures should drop several degrees each day through Sunday, with Sunday’s highs perhaps not reaching 60 in the Basin. We could also see some moisture from this Pacific storm — rain spreading into the area as opposed to thunderstorms forming here. The best chance for showers will be to the north of Tahoe, but there is a possibility of snow showers above 9000 feet this weekend throughout the region.

The trough is forecast to begin moving east by Monday, returning our temperatures to near normal for the end of August.

Stay tuned for details as conditions change.

Forecast Highs

Tahoe City

Wednesday 83
Thursday 79
Friday 74

At 7000 feet

Wednesday 77
Thursday 72
Friday 65

Regional radar with rain/snow mix:
9

Temperatures are expected to warm several degrees each day through Wednesday before leveling off.

Then a trough of low pressure of the Pacific Northwest coast will come into play. This features has the potential to send a wave of energy into the Northwest that would look very much like fall, with crisp cool air, some winds and, in far Northern California, some precipitation. We’re not likely to see any moisture this far south but we should see a quick cooling trend once this heat wave peaks.

But for now, the warmer days will be the story. It might actually feel like summer.

Stay tuned for details as conditions change.

Forecast Highs

Tahoe City

Monday 77
Tuesday 81
Wednesday 81

At 7000 feet

Monday 70
Tuesday 79
Wednesday 77

Regional radar with rain/snow mix:
9