Hypothyroidism caused by Hashimoto's thyroiditis is treated with thyroid hormone replacement agents such as levothyroxine, triiodothyronine or desiccated thyroid extract. A tablet taken once a day generally keeps the thyroid hormone levels normal.
September deserves to be a more popular time to visit Iceland. Though youâll miss out on seeing the sun high in the sky well past 10pm (sunset is around 7:30pm and the sun rises around 6:30am), temperatures are still quite nice, with average temps between 10.1Â°C (50 Â°F) and 5Â°C (41 Â°F) throughout the month, and prices are lower and crowds are fewer.
1 Overnight temperatures are generally warm with an average low of 20.2 Â°C (68.4 Â°F). 2  In September the range/ variation of daily average temperatures is 6.5 Â°C (11.7 Â°F).  The weather in September is very slightly soggy with occasional rain. Around 179.8mm (7.1in) of H2O accrues across an average of 13 days.