Preparing Your Pool for Winter

With temperatures in Denver reaching, on average, 86 degrees Fahrenheit in summer, every homeowner with a swimming pool takes full of advantage of it. After all, there’s often nothing better than relaxing pool-side on a weekend with not a worry in the world. That is until winter starts setting in, and those rays of sunshine turn to flakes of snow. Whether you’ve got an outside spa pool, or a swimming pool, choosing to take a dip in the midst of a winter blizzard is not for the faint-hearted.

Therefore, many people use the colder weather as an opportunity to give their swimming pool or spa pool a full clean and some tender, loving care. For those who don’t own a swimming pool or spa pool, you could even use those winter months to think about whether you’d like one for the impending summer months. There has to be some reward for your family after enduring three months on high alert for snow!

If you’re new to pool ownership and you’re not quite sure how to prepare for winter in Denver, we’ve included some great tips from our team below.

Clean the Pool

When you’re preparing for winter in Denver, you will surely have a list a mile long for things that need to be maintained and put into hibernation for the colder winter ahead. However, one of the most important things to be put to bed over the winter months is your swimming pool. The first step for both spa pools and swimming pools is to clean it. Cleaning your swimming pool can help prevent surface stains and damage while it sits unused. It’s also vital that you use your pool net to remove leaves, insects and other items that are likely to stick to the walls of the pool.

With a spa pool, you can add a degreaser to the spa to remove body oils and any other products that have the potential to build up and decay. From here, you can put the water pump into the tub to remove stale water.

Clean the Filters

When you’re preparing for winter in Denver, cleaning the filters is equally as important as cleaning your pool. A clean filter helps the pool to operate properly, and will make it far easier to bring back to life in the warmer months.

Cleaning your spa pool can be done in a similar fashion. Remove the filter from the skimmer, wipe the skimmer with filter cleaner, and soak it to remove built-up sediment. It also pays to use cartridge cleaner to remove hair, debris, leaves and anything else that made it through the filter. Once the spa is empty, you can then reinsert the cartridge into the filter.

Give it TLC

It’s often not necessary or recommended to empty your pool, even once winter hits. You just need to put steps in place to ensure it’s in the same condition you left it in, once the warmer weather hits. You will need to balance the pH levels, as well as protect it against algae. Algae can clog filters, cloud the water, and make it look awful as well! Once you’ve completed all the steps recommended by your pool supplier, it’s full steam ahead to put a cover over your pool and tuck it in for the long winter ahead. A similar process can be carried out for your spa pool. Release all plugs to open the drains. Turn off the power, unplug the electrical plugs and put a hardtop cover on the spa, if possible.

If you’re a pool owner, you will be aware of the joy they bring in warm weather. However, taking care of them is exceptionally important for their longevity and for ensuring you don’t void your warranty. If you’re unsure of how to winterize your spa pool or swimming pool, contact your pool supplier for further information.

In Colorado, wintertime is trading in flip-flops for snow boots, wakeboards for snowboards, and the sun kissed tan for pasty, white skin. Just because the weather has you neglecting your pedicures doesn’t mean you should be neglecting your pool. Wintertime is vital in keeping a healthy pool and having a wet and wild summer.   (more…)

It doesn’t take living in Colorado long to observe the extreme fickleness ofr the weather. 75 degrees in January? Sure! Snow in July? Why not. It’s no wonder, then, that many Coloradoans are still unsure when the best time is to winterize their pool. Like so many things, weather variations differ widely according to the exact geographic location of your in-ground pool. The pool season in Grand Junction or Dillon is not the same as the pool season in Denver. Local environmental pressures can alter local pool seasons dramatically from one region to the next.

Clearly, most of us realize there are limitations to pool season here in the Centennial State, but it’s only natural to want to hold on to your pool time until the very last possible day. While we’re not able to give exact days or dates to close your pool, historical weather data can, at the very least, get us in the ballpark.

In this study, we will be comparing the 5-year historical temperature data of three Weather Underground weather stations in the state of Colorado hailing from three very different environmental regions: The Front Range (Denver), The Rocky Mountains (Dillon). and The Western Slope (Grand Junction). Hopefully, after studying these regions you will have a better idea whether or not extending your pool season just that little bit longer is really a good call when it comes to the longevity and usability of your pool.

Determining Data

The first and final frosts of each year are the unofficial indicators of pool season. In light of this, for this study we will set the benchmark of ‘pool season’ for the time of the year that exhibits daily low temperatures at 60+F. However, it would be inconsequential to look only at only one or two years’ first and final frosts to attempt to set an exact date of when to open your pool for the upcoming Summer and winterize your pool for the upcoming Winter.  Pool and Spa Experts turns back time a bit further, using the 5-year historical data of each of the 5 regions to give a regional ‘average pool season’.

All data has been accrued from the Historical Weather page on the Weather Underground website.

When to Winterize You Pool – Denver, CO

Nicely nestled next to the foothills of the Rocky Mountains, Denver experiences large swings in temperature thanks to its locale – sometimes even multiple times in one day. For this reason, predicting your pool season is tricky in the Mile High City. Some years see a nearly 5 month pool season(YEAR), while others are cut short at 3-4 months (YEAR).

when to winterize your pool denverdenver-2012-13weather-d-2013-14d-weather-2014-15
d-weather-15-16Average Pool Season: June-Sept (4 mo)
Recommended Winterization: 2nd week of September

When to Winterize You Pool – Dillon, CO

Unlike its fellow D-town big brother, Dillon, Colorado, located in the heart of the Rocky Mountains on Interstate 70, typically observes a short pool season of only ~2-3 mos consistently throughout the years studied. The elevation and sun angle play a large role in the shortened pool season in this region. Makes sense – tall mountains provide LOTS of shade. So much so that many areas in the region experience snow melt well into late June and early July – not ideal for poolside relaxing.



historical temp data dillon co


when to winterize your pool dillon historical data

Average Pool Season: July-August
Recommended Winterization: 1st Septemeber

When to Winterize You Pool – Grand Junction, CO

You may be shocked to know that the average monthly temperature in Grand Junction is nearly 10 degrees higher than the Mile High City of Denver any given month of the year. Because of this, Grand Junction experiences a typically longer pool season than any of the other regions presented in this study. According to the data presented below, the average pool season in Grand Junction runs 5+ months, solidly. You may be driving through snow in the mountains along I 70 only to emerge in a temperate zone 20-30 degrees hotter (!!!) when descending into Grand Junction.




Average Pool Season: mid-May to mid-Oct
Recommended Winterization: 2nd week Oct

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