If you’re planning on venturing outdoors at any point over at least the next week, do keep in mind that it’s going to be decidedly cold.
The long term forecast from the Icelandic Met Office shows that temperatures are going to remain below zero, across the entire country, for at least the next week. In fact, temperatures will reach as low as -20°C in the northwest, and even lower than that in the Highlands (where you have no business being in the winter anyways).
The sole exception to this will be in the Westman Islands, where temperatures will reach a balmy 4°C on Saturday.
In addition, there will be high winds in the southeast and the east today and tomorrow. Winds there are expected to reach up to 23 metres per second during this time, and close to 35 metres per second near the mountains.
Iceland, due to its location at the butt end of the Gulf Stream, has a reputation for relatively warm winters. These temperatures, then, are the exception rather than the rule, so there is a good chance things will warm up a bit in the near future.