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Natural gas: winter weeks 1.3x as wide as summer, 12 of 16 years

A daily candlestick chart of natural gas futures, NYMEX NG1!, through 2025, with no indicators. The price starts near 3.7, rises to about 4.4 in mid January, drops to about 3.0 at the end of January, rises to about 4.9 in March, slides to about 2.6 by late August, climbs to about 5.5 in early December and ends near 3.7. A white caption reads: Natural gas futures, NG1!, daily, 2025. Cells: each month's typical week, orange wider. A large orange headline reads: Gas winter weeks: 1.3 times as wide as summer. A text box asks whether natural gas is wilder in winter, over 561 weeks of NYMEX NG1! from 2010 to 2025, each week measured high to low, Monday to Friday, with the weeks near a contract switch, the purple marks, left out: a typical week 8.52%; winter, December to February, 10.15% against summer, June to August, 7.79%; winter weeks 1.30 times as wide and wider in 12 of the 16 years; the widest months January 10.94%, November 10.30% and February 10.18%; the narrowest August 7.24%; and not wider in 2011, 2012, 2020 and 2022. Along the bottom, 12 cells, orange for January, February, November and December and teal for the other months. Purple marks along the bottom show the contract switches.
Natural gas, daily, 2025: each cell gives that month's median weekly range over 2010 to 2025, orange above the 8.52% median, teal below.

Natural gas is a heating fuel, so its price should swing more in winter. We measured how wide a normal week was in each calendar month, from 2010 to 2025.

What we measured

TradingView daily candles for natural gas futures (NYMEX NG1!, the front month). A week’s range runs from its high to its low, Monday to Friday, over the week’s first price. The front month switches contracts near the end of each month, so every week near a switch was left out, about one week in three in every month: 561 weeks kept.

What we found

A normal week moved 8.52% high to low. The four widest months were January 10.94%, November 10.30%, February 10.18% and December 9.43%. The narrowest was August at 7.24%.

MonthMedian weekly range (%)Weeks
January10.9448
February10.1842
March7.6348
April8.0846
May7.9248
June8.1546
July7.9848
August7.2448
September7.9046
October8.3148
November10.3045
December9.4348

Winter weeks, December to February, ran 10.15%, and summer weeks, June to August, 7.79%: about 1.3 times as wide.

Every year?

Not every year, but most: winter was wider than summer in 12 of the 16 years. The exceptions were 2011, 2012, 2020 and 2022, when the summer weeks ran wider. If it were a coin toss each year, 12 or more of 16 would come up about 4% of the time, a check we added after the run.

What to do with it

Size a natural gas position for the season. A stop set for a summer week meets a winter week about 30% wider at the median. Our post on gold, silver and copper measured the same weekly range for metals.

On the chart

Natural gas, daily, 2025. The cells along the bottom give each month’s median weekly range over 2010 to 2025: orange where it is above the 8.52% median, teal where it is below. The purple marks are TradingView’s contract switches.

How to check a market’s seasons yourself

  1. Take daily candles and work out each week’s high to low inside the week.
  2. Leave out the weeks with a contract switch, then group the rest by calendar month.
  3. Compare the seasons year by year, not only on the average.

What this does not tell you

How wide this winter’s weeks will be, or which way gas will go. Past data.

Observations, not recommendations.

We’re Signal Pilot Labs. We build the Elite Seven, seven indicators for TradingView, and we post what we measure, including the parts that didn’t work.

See what we build at signalpilot.io.


Past measurement described after the fact. Nothing here is a recommendation or an indication of future results.