I-89 weather conditions near Grantham, New Hampshire
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Seasoned Weather Conditions
Current Weather Conditions
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7 day weather forecast
Current condition: Overcast 76°F 2025-07-13T23:53:00-04:00
Overnight 2025-07-14, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 66. South wind around 5 mph.
Monday 2025-07-14, Chance T-storms then T-storms Likely. Showers and thunderstorms likely, mainly between 2pm and 5pm. Mostly cloudy, with a high near 81. South wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night 2025-07-14, Chance T-storms then Slight Chance Showers and Patchy Fog. A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday 2025-07-15, Patchy Fog then Sunny. Patchy fog before 8am. Otherwise, sunny, with a high near 87. Calm wind becoming west around 5 mph.
Tuesday Night 2025-07-15, Mostly Clear. Mostly clear, with a low around 66. Calm wind.
Wednesday 2025-07-16, Hot. Sunny and hot, with a high near 90.
Wednesday Night 2025-07-16, Mostly Cloudy. Mostly cloudy, with a low around 69.
Thursday 2025-07-17, Partly Sunny then Chance T-storms. A 50 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88.
Thursday Night 2025-07-17, Chance Showers. A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 69.
Friday 2025-07-18, Chance Showers then Chance T-storms. A 50 percent chance of showers and thunderstorms after 8am. Partly sunny, with a high near 83.
Friday Night 2025-07-18, Chance Showers. A 30 percent chance of showers. Partly cloudy, with a low around 65.
Saturday 2025-07-19, Mostly Sunny then Chance Showers. A 30 percent chance of showers. Mostly sunny, with a high near 81.
Saturday Night 2025-07-19, Chance Showers then Partly Cloudy. A 30 percent chance of showers. Partly cloudy, with a low around 61.
Sunday 2025-07-20, Partly Sunny then Chance Showers. A 30 percent chance of showers. Partly sunny, with a high near 78.
Current condition: Overcast 76°F 2025-07-13T23:53:00-04:00 
Overnight 2025-07-14, Slight Chance T-storms. A 20 percent chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 66. South wind around 5 mph.Monday 2025-07-14, Chance T-storms then T-storms Likely. Showers and thunderstorms likely, mainly between 2pm and 5pm. Mostly cloudy, with a high near 81. South wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Monday Night 2025-07-14, Chance T-storms then Slight Chance Showers and Patchy Fog. A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 67. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday 2025-07-15, Patchy Fog then Sunny. Patchy fog before 8am. Otherwise, sunny, with a high near 87. Calm wind becoming west around 5 mph.
Tuesday Night 2025-07-15, Mostly Clear. Mostly clear, with a low around 66. Calm wind.
Wednesday 2025-07-16, Hot. Sunny and hot, with a high near 90.
Wednesday Night 2025-07-16, Mostly Cloudy. Mostly cloudy, with a low around 69.Thursday 2025-07-17, Partly Sunny then Chance T-storms. A 50 percent chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 88.
Thursday Night 2025-07-17, Chance Showers. A 30 percent chance of showers before 2am. Mostly cloudy, with a low around 69.Friday 2025-07-18, Chance Showers then Chance T-storms. A 50 percent chance of showers and thunderstorms after 8am. Partly sunny, with a high near 83.
Friday Night 2025-07-18, Chance Showers. A 30 percent chance of showers. Partly cloudy, with a low around 65.Saturday 2025-07-19, Mostly Sunny then Chance Showers. A 30 percent chance of showers. Mostly sunny, with a high near 81.
Saturday Night 2025-07-19, Chance Showers then Partly Cloudy. A 30 percent chance of showers. Partly cloudy, with a low around 61.
Sunday 2025-07-20, Partly Sunny then Chance Showers. A 30 percent chance of showers. Partly sunny, with a high near 78.