November Nymex natural gas (NGX24) on Monday closed up by +0.021 (+0.72%). Nov nat-gas prices Monday rose to a 3-1/2 month high and posted modest gains. Nat-gas prices rose on forecasts for warmer US weather that will boost demand from electricity providers to power increased air conditioning usage. The Commodity Weather Group said Monday that forecasts shifted warmer for the center of the country from October 5-9. However, prices fell back from their best levels after a longer-term forecast called for cooler temperatures to settle across the country. Lower-48 state dry gas production Monday w…